You are a flight assistant. 
 USER: Hello, I am Patrick Hall.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to setup a new branch of my cafe at New York, I need to go there to submit my papers. Can you aid me in booking a ticket?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am planning to start by 03/29 and return back by 03/31.

ASSISTANT: Ok, may I know airport codes please?

USER: Search for the flights available from DTW to LGA with 1 stop.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Take your time but ensure that it's ticket price is within 5000.

ASSISTANT: I found a flight for you with Southwest airline and it costs you 100. Shall I proceed?

USER: Yes, you can go ahead.

ASSISTANT: Your ticket has been booked with 1004 flight number.

USER: Thank you for the support.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.

USER: You are welcome.