You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER:  I want to change my recent reservation as my political interaction with people got postponed due to heavy rains. Can you do this for me?

ASSISTANT: Sure, may I know you good name?

USER: Larry Hall is my name.

ASSISTANT: Thank you Larry Hall. Please wait for a while.

USER: OK.

ASSISTANT: unfortunately , there is no reservation found on your name.

USER: That's ok, not a problem.

ASSISTANT: Thank you for contacting us.

USER: Thanks for your time.

ASSISTANT: Have a nice day.