You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please help me in booking a flight ticket from Washington, IAD to Detroit, DTW?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My journey dates are from Feb 07 to Feb 09.

ASSISTANT: Do you have any specifications about flight connections?

USER: I need a lay by in between journey.

ASSISTANT: Do you have any preferences about class?

USER: I am ok with any class.

ASSISTANT: Please mention your name.

USER: My name is Donna Gonzalez.

ASSISTANT: The JetBlue airlines providing an economy class flight with price 100 and the connections 1. Shall I confirm your ticket?

USER: Is that depart time is evening or not.

ASSISTANT: The Spirit airlines providing an economy class flight with price 200 and the connections 1. The departure time is 22:00 hours. Shall I confirm your ticket?

USER: Sure, you can proceed for booking.

ASSISTANT: Your ticket is booked. The flight number is 1011.

USER: Thanks for your help.

ASSISTANT: Welcome, have a great day.