You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, I am glad to help you with that. Can you please let me know your full name?

USER: Thank you. I am Shirley Allen.

ASSISTANT: Ok, please give me a minute.

USER: Sure, I will wait.

ASSISTANT: Sorry to tell you that, there is no reservation under your name to change the ticket details.

USER: That's fine, not an issue. Thank you for your information.

ASSISTANT: You are welcome. Thank you for choosing us.