You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you for the day?

USER: I need to make some modifications in my previous flight ticket booking, can you please assist me with that changing?

ASSISTANT: Sure, may I know your name please?

USER: Thank you and my name is Betty Mitchell.

ASSISTANT: Ok, please be on hold for some time.

USER: Sure, I can wait.

ASSISTANT: Sorry, we could not find any reservation on your name.

USER: Ok, not an issue with that one. Thank you for your information.

ASSISTANT: Thank you for opting us.