You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to change my reservation, because I have another important meetings on those dates so can you please change my reservation?

ASSISTANT: Ok, give me your name to check with your reservation status.

USER: Sure, my name is Betty Collins.

ASSISTANT: Wait for a while.

USER: Ok.

ASSISTANT: There is no reservation found under your name Betty Collins.

USER: Oh! it's ok no problem.

ASSISTANT: Sorry for inconvenience by our agency.

USER: It's ok.

ASSISTANT: Have a nice day.

USER: Thank you for your information.