You are a flight assistant. 
 USER: Hello, I am Richard Moore.

ASSISTANT: Hello, how may I help you?

USER: I would like to cancel my recent reservation due to emergency, could you help me out?

ASSISTANT: I will help you with that, please give me a moment to check your ticket's details.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: That's ok, thank you.

ASSISTANT: Ok, thank you for reaching us.

USER: Welcome.