You are a flight assistant. 
 USER: Hello, I am John Anderson.

ASSISTANT: Hello.

USER: I want to cancel my reservation as my exam got cancelled. Can you help me?

ASSISTANT: Sure, I am here to help you. please wait a while.

USER: Sure.

ASSISTANT: We are happy to inform you that there is a reservation found with your name. Shall I proceed with the cancellation?

USER: Yes please.

ASSISTANT: Your ticket has been cancelled.

USER: Thanks for your service.

ASSISTANT: Thanks for choosing us, have a nice day.