You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Frank Walker.

ASSISTANT: How can I assist you today?

USER: I would like to book a ticket from DCA to PHX, can you please help me out?

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

USER: I am travelling on these dates 04/21 and 04/23.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a flight with price 100 and the connections 1 is available. Shall I confirm your ticket?

USER: Ok, you can proceed.

ASSISTANT: Your ticket is booked. The flight number is 1001 and the airline is Southwest.

USER: Thank you for your services.

ASSISTANT: Welcome, have a great day.