You are a flight assistant. 
 USER: Hello, my name is Joshua Campbell.

ASSISTANT: Hello Joshua, how may I assist you?

USER: I am planning to visit some places in Atlanta. So, please help me to search for the ticket.

ASSISTANT: Sure, how long your vacation?

USER: My trip dates are 12/29 and 12/31.

ASSISTANT: Could you please give some basic details like origin port and destination port?

USER: I need to travel from PA- PHL to GA-ATL.

ASSISTANT: Sure, please wait for a minute.

USER: Please check for the flight with connection 1 and cost should not exceed 500.

ASSISTANT: OK, as per your details there is a flight to book your ticket. Shall I proceed?

USER: OK, then proceed with the booking.

ASSISTANT: Sure. Your ticket has been booked with flight number 1018.

USER: Thank you for helping me.

ASSISTANT: It's my pleasure.