You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Jonathan Harris, can you help me to book a direct flight from MSP?

ASSISTANT: I am willing to help you, can I have your travel dates?

USER: I would like to travel on Sept 26 and Sept 28.

ASSISTANT: May I know your destination airport code?

USER: My preferred destination airport code is IAD.

ASSISTANT:  Is there any another specifications on your trip, so that I can arrange like that only.

USER: Please search for a flight within price 1000.

ASSISTANT: There is a connecting flight-1002 with price 100, is it ok for you?

USER: Proceed with booking.

ASSISTANT: Ok, your ticket has been done on Southwest airlines.

USER: Thank you.

ASSISTANT: Thanks for contacting us, have a good day.