You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Can you help me in cancellation of my recent reservation?

ASSISTANT: Sure, may I know your name?

USER: I am William Mitchell.

ASSISTANT: Thank you. Please wait for a while.

USER: Sure.

ASSISTANT: I found your reservation and cancelled it successfully.

USER: Thanks for the service.

ASSISTANT: You are welcome and thank you for choosing us.