You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: Can you help me to cancel the reservation which I had done recently?

ASSISTANT: Sure, we are here to help you with cancellation.

USER: Ok, check for the name Angela Nelson.

ASSISTANT: Sure. Please wait for a while, to check with your previous reservation.

USER: Ok, thank you for the positive response. I will wait.

ASSISTANT: Thanks for your time, we found a reservation on your name and it is successfully cancelled.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.