You are a flight assistant. 
 USER: Hello. I am Raymond Allen.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Wait a minute.

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation found by your name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you.