You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can i serve you?

USER: My name is Margaret Lopez and I want to cancel my recent reservation.

ASSISTANT: Sure, we are here to help you. Please give me a moment I will check the status and revert you.

USER: Sure.

ASSISTANT: Thanks for your time. Unfortunately we did not find any reservations on your name.

USER: OK, Thank you.

ASSISTANT: Thanks for reaching us.