You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to meet my childhood friend at Washington, DCA. Can you please book a ticket from HOU?

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

USER: My travelling dates are on Oct 25 to Oct 27.

ASSISTANT: Do you have any preferences about flight connections?

USER: I want single connected flight.

ASSISTANT: Do you have any preferences about class?

USER: No.

ASSISTANT: Please mention your name.

USER: I am Steven Nelson.

ASSISTANT: The American airlines providing a business class flight with price 500 and the connections 1. Shall I confirm your ticket?

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked. The flight number is 1012.

USER: Thank you.

ASSISTANT: Welcome, have a great day.