You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Joseph King.

ASSISTANT: Joseph King, How exactly I can serve you the best today?

USER: I want to cancel my recent reservation. Can you help me in this?

ASSISTANT: Sure, I can help you in cancellation.

USER: Thank you.

ASSISTANT: Please be on hold.

USER: Ok.

ASSISTANT: Thanks for holding on, we found a reservation on your name and it has been cancelled successfully.

USER: Thank you.

ASSISTANT: Thanks for contacting us.