You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I help you today?

USER: I am Matthew Gonzalez. I want to cancel my recent reservation as my tour got cancelled. Please help me with cancellation.

ASSISTANT: Sure, I will help you with that. Please wait for a while, I will check and get back to you.

USER: Ok.

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

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for choosing us.