You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my reservation, due to the heavy rainfall from a couple of days. Can you help me with that?

ASSISTANT: Ok. May I know your name to check reservation?

USER: I am David Thomas.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Thank you for your time.

USER: Ok.

ASSISTANT: We found reservation on your name. Shall I cancel it?

USER: Please cancel it.

ASSISTANT: Your reservation has been successfully cancelled.

USER: Thanks for your assistance.

ASSISTANT: Thank you for reaching us.