You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I address you?

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

ASSISTANT: Sure, please provide your name to fetch your ticket from our database.

USER: My name is Frank Lee.

ASSISTANT: Just give me a moment.

USER: Sure, I will wait for your response.

ASSISTANT: We regret to inform you that there is no active reservation found on your name.

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

ASSISTANT: Thank you for contacting us.

USER: Welcome, have a nice day.