You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Elizabeth Green. I want to cancel my recent reservation due to an emergency work, can you help me in cancel reservation?

ASSISTANT: Sure, I will help you. Please hold on a moment, I will check and get back to you.

USER: Sure.

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

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.