You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Pamela Phillips, I need to cancel my reservation. Can you please help me?

ASSISTANT: Sure, I will cancel your ticket.

USER: Thank you.

ASSISTANT: Sorry, there are no reservations.

USER: It's ok, Thank you for the help.

ASSISTANT: Thank you for choosing us.