You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I render you today?

USER: I want to cancel my recent ticket booking due to office work that my manager did not approve my leaves. So, Can you please cancel it?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT:  On what name, do I need to check your reservation status?

USER: Check it on my name, Mary Parker.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait for your response.

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: Ok, Thanks for your kind information.

ASSISTANT: Thank you for opting us.