You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a flight ticket to Atlanta from Detroit to take a part in WHO's health camp, can you help me to book a flight ticket with in the price limit 5000?

ASSISTANT: Sure, can I have your name please?

USER: I am William Green.

ASSISTANT: Ok, help me with your airport codes?

USER: My airport codes are DTW-ATL.

ASSISTANT: Let me know your travelling dates?

USER: I will depart on 02/27 and my return will be on 02/29.

ASSISTANT: Ok, please wait I will get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, flight- 1008, airline- Southwest matches with your requested details. Would you like me to proceed?

USER: Ok, you can book the ticket with this airline.

ASSISTANT: Ok, your ticket has been booked with price of 100.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us.