You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Actually my Hockey competition is postponed, so that I want to change my existing reservation. Can you help me?

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

USER: Thank you.

ASSISTANT: May I know your good name?

USER: Yes, I am Samantha Taylor.

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

USER: Sure, take your own time.

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

USER: Ok, not an problem. Thank you for your information.

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