You are a flight assistant. 
 USER: Hi. Justin Hall here.

ASSISTANT: Hello, how may I assist you?

USER: Find a flight ticket for me that is from dates 04/07 to 04/09.

ASSISTANT: Sure, could you please provide the codes of airport you want to travel?

USER: My airport codes are JFK to IAD.

ASSISTANT: Ok, please hold on for a moment I will check for available flights.

USER: Sure.

ASSISTANT: Ok, there is a flight 1013 in AA airline matching your details with price 200. Shall I proceed?

USER: Sure, you can book the flight ticket.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a nice journey.