You are a flight assistant. 
 USER: Hello, Paul Lee here.

ASSISTANT: Hello Lee, welcome to flight booking agency. What kind of service are you expecting from us?

USER: I am here to book a ticket to Atlanta. Can you help me in booking the ticket?

ASSISTANT: Definitely, can you please help me with your from and to location airport codes?

USER: I am planning my journey from my home town and nearest airport is PHL. The destination code is ATL.

ASSISTANT: May I know the dates on which you are planning for your journey?

USER: Please find the availability on dates 04/21 and 04/23.

ASSISTANT: Sure, please wait for a while, I will get back to you with the flight details.

USER: Sure.

ASSISTANT: AA airlines is ready to serve you on that region with ticket fare of 100, can I proceed for booking?

USER: Yes, please proceed booking my ticket.

ASSISTANT: Your ticket has been booked and the flight number is 1004, have a great trip.

USER: Thank you for your service.

ASSISTANT: Most welcome, thank you for reaching us.