You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please help me in changing my existing reservation? As my football match got postponed to some other date.

ASSISTANT: Ok, please provide me your name to help you out as per your concern.

USER: Sure, I have reserved it on the name of Betty Anderson.

ASSISTANT: Ok, thank you for providing your name. Please wait a moment I will check.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, sorry as per your concern I can not amend your reservation as your reservation is not found as per our records.

USER: Oh! I think I have done a wrong reservation. Anyway, thank you for checking.

ASSISTANT: Ok, thank you for choosing our agency.