You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: Due to heavy rains I want to cancel my reservation, please help me out?

ASSISTANT: Sure, I will help you with that. May I know your good name please?

USER: My name is Charles Lewis.

ASSISTANT: Please be hold on for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting. Your reservation has cancelled successfully. Thank you for  reaching us.

USER: Thank you for your quick response.

ASSISTANT: Your welcome, have a good day.