You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Larry Thompson.

ASSISTANT: How can I aid you Larry?

USER: Owing an emergency, I want to cancel my recent reservation. Can you please help me?

ASSISTANT: Sure, please wait. I will check your previous reservation.

USER: Ok, take your time.

ASSISTANT: Sorry Larry, no reservation found by your name in our website.

USER: It's ok, thank you for checking.

ASSISTANT: Most welcome, have a great day.