You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What guidance you  are expecting from our travel agency?

USER: Actually my Snooker's Competition postponed, so that I want to change my existing reservation. Can you help me?

ASSISTANT: Sure, I am here to help you. Can you please tell me your name?

USER: Thank you. I am Samantha Campbell.

ASSISTANT: Ok, please hold on for a while.

USER: Sure.

ASSISTANT: Sorry to inform you, there is no reservation found with your name in our confirmation chart list.

USER: That's fine, ok problem. Thank you for your information.

ASSISTANT: Thank you for choosing our travel agency.