You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Matthew Gonzalez.

ASSISTANT: Ok.

USER: I need to cancel my reservation, can you help me out please?

ASSISTANT: Ok, sure. Please wait. Sorry, no reservation found on your name to cancel.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.