You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I need to change my reservation due to my planned event got postponed due to weather problem. So please help me with changing my reservation.

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: May I know your name to check the reservation status?

USER: Sure, myself Catherine Wilson.

ASSISTANT: Ok, please hold on for a minute.

USER: Sure, take your time to check reservation.

ASSISTANT: Sorry Wilson, there is no ticket booking found on your name in our system data.

USER: Oh! It may not be booked properly due to technical issues. Anyway, thank you for your time.

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