You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Patricia Williams.

ASSISTANT: Nice to meet you.

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

ASSISTANT: Sure, please give me a moment.

USER: Sure, take your time.

ASSISTANT: There is no reservation found under your name.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a great day.