Maybe I'll get the doctor to write the Spiriva prescription

A regular customer wants an owing for Spiriva capsules for her husband. I go its ok and then she got greedy and asked me if she can get 2.

Me: Sorry we can only give you one without a script.

She: But why? I'll bring the script back.

Me: Yes I know. But you don't have a script now. I'll give you another one when you bring the script in. 

She: Its not enough.

Me: Not enough? One box has 30 capsules in there. You use it once a day. This one box will last you one month!

She: Yeh just in case i don't see the doctor or I forget.

Me: Ummm.... no. If you want me to give you a box now, you need to bring a script in within 7 days anyway. So one box is more than enough.

She: Yeh maybe my husband is going overseas. I don't know.

Me: Maybe? Then maybe when you know for sure, maybe go to the doctor and get a script, then maybe I'll give you another one. And no maybe for bringing back the script. You MUST bring back the script within 7 days. 

She: Ok.......... 

MAYBE????!!!! What kind of reasoning is that? Maybe I won't give it to you knowing that you're a maybe for bringing back a script.........