You are a flight assistant. 
 USER: Hello.

ASSISTANT: How can I amend you at this moment?

USER: I already book a flight ticket, but due to my bad health I am unable to travel. Can you cancel my reservation?

ASSISTANT: Sure, I would be helpful to serve you.

USER: Thank you.

ASSISTANT: Before proceeding to cancel your previous reservation, may I know your name?

USER: My name is Janet Harris.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, based on your name we haven't found any previous flight reservation in airline database.

USER: Ok, thank you for the information.

ASSISTANT: Thanks for reaching us.