You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Ryan Parker.

ASSISTANT: What can I do for you today?

USER: I want to cancel my reservation, due to an emergency.

ASSISTANT: Sure, wait a while.

USER: Ok.

ASSISTANT: Sorry Ryan, no reservation has been found on your name.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for contacting us.

USER: Welcome.