You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: Please book a ticket to Dallas & Fort Worth, TX-DFW from New York, NY-JFK.

ASSISTANT: Sure, we are happy to help you. When do you want to depart and return?

USER: Departure is by 03/18 and 03/20 is return date.

ASSISTANT: Ok, May I know your good name?

USER: I am Pamela White.

ASSISTANT: Ok, Is there any class preferences?

USER: No class preference.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your patience,we found a connecting flight in 1001 Spirit plane with a halt. Can I proceed for booking with a fare of 100?

USER: Please book a flight.

ASSISTANT: Sure, your ticket has been booked in economy class.

USER: Thanks.

ASSISTANT: Thank you for choosing us.