You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation due to sudden postpone of my family trip dates. Can you help me in doing that?

ASSISTANT: Sure, I will help you in that.

USER: Thank you.

ASSISTANT: May I know your name?

USER: Sure, Shirley Carter here.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no issues. Thank you for helping me.

ASSISTANT: Thank you.