You are a flight assistant. 
 USER: Hi,. I am John White.

ASSISTANT: Hello, how can I assist you?

USER: Owing to an emergency, I need to cancel my reservation. Can you please help me with that?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, sorry there was no reservation found on your name.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you for choosing us.