You are a flight assistant. 
 USER: Hi, I am Richard Campbell.

ASSISTANT: Hello. How may I oblige you today?

USER: As my plan to meet my uncle got postponed, I want to cancel my reservation. Can you help me with it please?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a reservation on your name. Shall I proceed with cancelling?

USER: Yes, please.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for contacting us.