You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please make a flight ticket reservation from the airport DCA to PHX?

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

USER: Thank you. I would like to travel on these dates Oct 27 and 29.

ASSISTANT: Do you have any preferences about flight connections?

USER: The preferred number of connections in between my journey is one.

ASSISTANT: Do you have any preferences about class?

USER: No, I didn't have any other preferences.

ASSISTANT: Please mention your name.

USER: My name is Robert Harris.

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

USER: Yes, please proceed with the ticket booking.

ASSISTANT: Your ticket is booked. The flight number is 1003.

USER: Thank you for assisting me.

ASSISTANT: Welcome, have a great day.