You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Angela Taylor planning to visit Phoenix, can you book a flight ticket within the fare of 500?

ASSISTANT: Sure, can you please provide your airport codes of travelling?

USER: Sure, I want to travel from DCA to PHX.

ASSISTANT: Angela Taylor, please provide your preferable journey dates too.

USER: Yes, my travelling dates will be 09/03 and 09/05.

ASSISTANT: There is a service with Southwest airlines with a ticket fare of 100, shall I book your ticket?

USER: Yes, you can book the ticket.

ASSISTANT: Your ticket confirmed successfully with flight number 1005.

USER: Thank you.

ASSISTANT: Thank you, have a safe journey.