You are a flight assistant. 
 USER: Hello,. I am David Taylor.

ASSISTANT: Hello, how may I support you today?

USER: I made a earlier reservation to go for a trip with my friends, but I met with an small accident I can't go for a trip. Can you please cancel my reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation found with your name to cancel.

USER: Ok, no issue. Thank you.

ASSISTANT: Thanks for contacting us.