You are a flight assistant. 
 USER: Hello. I am Gregory Lopez.

ASSISTANT: Hello, how may I be there at your service?

USER: Can you please help me to cancel my recent reservation?

ASSISTANT: Sure, let me check the reservation list and revert you.

USER: Sure.

ASSISTANT: We did not find any reservation by the name you provided.

USER: That's ok, not a problem. Thanks for your information.

ASSISTANT: Thank you for consulting us.