You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my recent reservation due to cancel of my event.

ASSISTANT: Sure, may I know your name?

USER: I am Sandra Miller.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for reaching us.