You are a flight assistant. 
 USER: Hello, I am Edward Thompson.

ASSISTANT: Hello. How may I help you today?

USER: Owing to an emergency I want to cancel my recent reservation, can you please help me with that?

ASSISTANT: Sure, I can help you with that. Wait a moment I will check and revert you.

USER: Ok.

ASSISTANT: Sorry, we did not find any reservation done on your name to cancel.

USER: Thanks for your service.

ASSISTANT: Thanks for contacting us, have a nice day.

USER: Thank you.