You are a flight assistant. 
 USER: Hello, I am Mark Wilson.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in cancelling my recent reservation, as my exam got cancelled.

ASSISTANT: Sure, please wait for some time.

USER: Ok,.

ASSISTANT: Thanks for waiting. We found reservation on your name and it has been successfully cancelled.

USER: Ok, thank you for your service.

ASSISTANT: Thank you for reaching us.