You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. May I know your name?

USER: I am Rebecca Johnson.

ASSISTANT: How can I help you?

USER: I want to cancel my recent reservation as my plan to death valley adventure got cancelled. Please help me with cancellation.

ASSISTANT: Sure, I will help you. unfortunately, there is no reservation with your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.