You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

USER: I want to cancel my recent reservation due to cancel of my brother's daughter engagement. Can you please help me with it?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Let me know your name to check your reservation?

USER: Sure, my name is Amanda Lee.

ASSISTANT: Please wait a while.

USER: OK.

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: Not a problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.