You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

USER: I want to cancel my reservation as my exams got cancelled, can you please help me out?

ASSISTANT: Sure. May I know your name?

USER: Please check the reservation on the name of Melissa Miller.

ASSISTANT:  Ok, Please wait a while.

USER: Ok.

ASSISTANT: Thanks for being waiting, We found a reservation by this name and it has been cancelled successfully,.

USER: Thank you.

ASSISTANT: Thank you for choosing us.