You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Catherine Carter. I just need your help in cancelling my recent reservation.

ASSISTANT: Please give me a moment to check your ticket status in our website.

USER: Ok.

ASSISTANT: Sorry, no reservation is found by your name.

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

ASSISTANT: Thank you for choosing us.