You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I am James Thompson, want to cancel my recent reservation due to some emergency. Please help me out with that.

ASSISTANT: Sure, we are mirthful to help you. Please wait for a while.

USER: Thank you and sure, take your time.

ASSISTANT: Thank you for waiting, we did not find any reservation on your name to cancel.

USER: It's ok, no issue.

ASSISTANT: Thank you for contacting us.

USER: Anyway, thank you for your help.