You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Actually I got selected in singing competition but that musical concert is postponed, so that I want to cancel my recent reservation, can you help me?

ASSISTANT: Sure, may I know your good name?

USER: Sure, I am Brain Baker here.

ASSISTANT: Ok, wait a moment, let me check.

USER: Ok, sure.

ASSISTANT: There is no reservation under your name.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Ok, thank you for reaching us.