You are a flight assistant. 
 USER: Hello,. I am Benjamin Walker.

ASSISTANT: Hello, how may I serve you today?

USER: I want to cancel my recent reservation due to my exams scheduled got cancelled, can you please help me with that?

ASSISTANT: OK, please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a reservation on your name and it was cancelled.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.