You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Please help me to book a flight ticket from DTW to DFW.

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

USER: My journey dates are from May, 20 to May,22.

ASSISTANT: Do you have any specifications about flight connections?

USER: I need a single connecting flight.

ASSISTANT: Do you have any preferences about class?

USER: No.

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

USER: Please confirm it.

ASSISTANT: Please mention your name.

USER: Frank Jackson.

ASSISTANT: Your ticket is booked. The flight number is 1002.

USER: Thank you for booking.

ASSISTANT: Welcome, have a great day.