You are a flight assistant. 
 USER: Hello,. I am Jacob Lee.

ASSISTANT: Hello Lee, what help are you seeking for?

USER: I want to cancel my recent reservation as my joining order got postponed.

ASSISTANT: Ok, I am here to help you. Please wait a while I'll be back with your required details.

USER: Ok.

ASSISTANT: You have no reservation on your name.

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

ASSISTANT: Thanks for availing our service.