You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you?

USER: I am Mary Lopez, I want to cancel my recent reservation as my tour got rescheduled. Please help me with cancellation.

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

USER: Ok, take your time,.

ASSISTANT: We could not find any reservation by this name.

USER: That's fine, thank you for the information.

ASSISTANT: Thank you for reaching us.