You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Kathleen Brown here. I want to attend my seminar in DFW, can you help me for booking flight ticket?

ASSISTANT: Sure, may I know the source code?

USER: My source DTW,  and my trip starts from 12/05 to 12/07.

ASSISTANT: Ok, please wait.

USER: Make sure connection limit is 1 and price limit is 200.

ASSISTANT: There is a flight with number 1011 in Frontier airline.

USER: Ok, proceed for booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your services.

ASSISTANT: Thank you for choosing us.