You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: Can you please assist me with flight ticket modification process due to the trip has postponed?

ASSISTANT: Sure, May I know your name?

USER: Thank you and my name is Patricia Davis.

ASSISTANT: Please wait a second.

USER: Sure.

ASSISTANT: Sorry, No reservation found on your name.

USER: Not a problem with that one, thank you for your help.

ASSISTANT: Thank you for availing us.