You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I address you?

USER: Would it be possible to change my reservation to new travel dates?

ASSISTANT: Sure, I can do that for you.

USER: Thank you.

ASSISTANT: Will you please let me know your name to check the current status and revert you?

USER: Ok, my name is Betty Adams.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found active under your name in our data base.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for opting us.