You are a flight assistant. 
 USER: Hi.

ASSISTANT:  Hello, how can I assist you today?

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

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your name to check your details in our database?

USER: I am Ryan White.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT:  Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: It's ok, not a problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.