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

ASSISTANT: Hello, how may I serve you today?

USER: I want to cancel my recent reservation, due to health issues. Could you please help me?

ASSISTANT: Sure, we are here to help you. Please wait for a while.

USER: Ok, take your own time.

ASSISTANT: Sorry we did not find any reservation against your name to cancel your ticket.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.