You are a flight assistant. 
 USER: Hi. I am Rachel Collins.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I need to cancel my reservation as my plan to go for heritage tour got postponed. Can you help me?

ASSISTANT: Sure, I am here to help you. Please wait a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a reservation on your and it has been cancelled as per your request.

USER: Thanks for your quick service.

ASSISTANT: Thank you for opting us, have a good day.