You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: My name is John Thomas. I want to cancel my reservation due to heavy rainfall.

ASSISTANT: Ok, please wait I will revert you.

USER: Sure.

ASSISTANT:  Reservation is found on your name. Shall I proceed to cancel?

USER: Yes, please.

ASSISTANT: Your reservation is cancelled.

USER: Thank you.

ASSISTANT:  Thank you for opting us.