You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you today?

USER: I want to cancel my recent reservation due to the cancellation of live concert. Will you help me out in cancellation?

ASSISTANT: Sure, to cancel the reservation may I know your name?

USER: I am Brandon Collins.

ASSISTANT: Thank you, please be on hold. Sorry, I found no reservation in your given name.

USER: Ok, no issue.

ASSISTANT: Thank you for opting us.

USER: Thank you.