You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to modify the return journey date in the flight ticket which is booked previously because I have planned for the trip for some more days. Can you please help me to change the details?

ASSISTANT: Sure, I am here to help you.

USER: Thank you for accepting my request.

ASSISTANT: May I know your good name please?

USER: My name is Patrick Jackson.

ASSISTANT: Please hold on a minute, I will check the records.

USER: Ok, please make it fast because I am in some work.

ASSISTANT: Sorry to inform that, there are no reservation found on your given name.

USER: It's ok, not a problem with that one. Anyways thank you for your help.

ASSISTANT: Thanks for reaching us, have a nice day.

USER: You are welcome.