You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: As my friend met with an accident, so please cancel the reservation with the name of Patrick Hall.

ASSISTANT: Sure, let me check the status.

USER: Ok.

ASSISTANT: Patrick, we didn't found any reservation under your name.

USER: Not a problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.