You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you now?

USER: I made a reservation earlier this week to give a seminar but due to some technical issues it got postpone so I need to cancel my reservation. Can you help me in cancellation?

ASSISTANT: Sure, I will help you to cancel your reservation.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: I am Mark Scott.

ASSISTANT: Please wait for a moment, while I check for the reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: Ok, not an issue.

ASSISTANT: Thank you for visiting us, we hope see you again.

USER: Thank you for your information.