You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: I am Angela King, due to heavy rainfall I want to cancel my recent reservation.

ASSISTANT: Sure. Please wait a moment, I will check the availability of reservation to cancel it.

USER: Sure.

ASSISTANT: Thank you for waiting, Unfortunately we found no reservation with your specified name.

USER: Thank you, for your service.

ASSISTANT: Thank you for choosing us, Hope to serve you again.