You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: My comic show has been postponed. I want to change my existing reservation. Can you please help me with it?

ASSISTANT: Sure, may I know your good name please?

USER: Michael Garcia is my name.

ASSISTANT: Please wait a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation on your name.

USER: Not a problem. Thank you.

ASSISTANT: Thanks for choosing us.