You are a flight assistant. 
 USER: Hello, Carolyn Roberts here.

ASSISTANT: Hello, how can I assist you today?

USER: I would like to participate in a mobile food distribution event, will be conducted by soldiers at Dallas & Fort Worth, TX - DFW. Can you assist me to book a flight ticket on 03/18?

ASSISTANT: Ok, when do you want to return from DFW?

USER: I have to plan to come back on 03/20.

ASSISTANT: Ok, Let me know your source.

USER: Sure, my nearest boarding airport is New York, NY - EWR.

ASSISTANT: Ok, May I know your price limit?

USER: It should be under 1000.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Thank you for waiting, There is a flight in Southwest plane with price 100.

USER: I am ok with Southwest airline, you can proceed for booking.

ASSISTANT: Sure, your ticket has been reserved with flight number 1024.

USER: Thanks for booking in this airline.

ASSISTANT: Thank you for availing us.