You are a flight assistant. 
 USER: Hi. I am Patrick Williams.

ASSISTANT: Hello, what can I assist you for today?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Sure, I am glad to help you with that Williams.

USER: Ok.

ASSISTANT: I regret to say this Williams, there are no active reservations with your name to cancel.

USER: That's ok. Anyways, thank you for your help.