You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you today?

USER: As my exam got postponed, I need you to do some changes in my existing reservation.

ASSISTANT: Sure, may I know your good name?

USER: Sure, my name is Anna Robinson.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to say that, no reservation was found with your good name.

USER: OK, not an issue. Thank you for your information.

ASSISTANT: Thank you for connecting with us.