You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I amend you?

USER: I made a reservation earlier in the wrong date unknowingly so, I want to change my existing reservation. Can you help me with that?

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: Sure, my name is James Clark.

ASSISTANT: Ok, please wait for a few minutes, I will check the status and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting, we did not find any reservation on your name.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for approaching us.