You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Shirley Carter here.

ASSISTANT: How can I assist you Shirley Carter?

USER: Can you cancel my seat which I have reserved for attending a marriage.

ASSISTANT: Sure, I will help you with this. Wait a moment please.

USER: Sure, take your time to get it.

ASSISTANT: I have searched the database with the name Shirley Carter, I couldn't find any active reservation on your name.

USER: It's ok, not an issue for me. Thanks for checking.

ASSISTANT: Thank you for contacting us.