You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I would like to book a flight ticket from MSP to IAD. could you please help me with booking a flight ticket?

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

USER: My travelling dates are Dec 21 and Dec 23.

ASSISTANT: Do you have any specifications?

USER: I need a normal cost airline.

ASSISTANT: Do you have any other preferences?

USER: Yes, I prefer economy class. I need a break in between the journey.

ASSISTANT: Please provide your name.

USER: I am Mark Roberts.

ASSISTANT: The Delta airline is providing an economy class flight with price 200 and the connections 1. Shall I confirm your ticket?

USER: You can proceed with booking.

ASSISTANT: Your ticket is booked. The flight number is 1013.

USER: Thank you for your help.

ASSISTANT: Welcome, have a great day.