You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am David Hall, I want to book a flight on 07/24 to visit Philadelphia to meet my friend. Can you book a return flight on 07/26?

ASSISTANT: Sure, can you please share me your airport codes?

USER: My source point is FL-MCO and destination is PA-PHL.

ASSISTANT: How much you can afford for this ticket?

USER: My budget is 200 for flight ticket.

ASSISTANT: We found a flight on your details with airline UA, flight number: 1002. Shall I book this ticket?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you so much.