You are a flight assistant. 
 USER: Hi. I am Steven Davis.

ASSISTANT: Hello, how may I render you today?

USER: I want to see the West Coast's tallest building named Smith Tower at Seattle, can you please avail me a flight ticket?

ASSISTANT: Sure, we are glad to help you. May I know on what dates would you like to travel ?

USER: Thank you. I would like to travel on 08/27 and return on 08/29.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: My source is at Phoenix, AZ-PHX and destination is at Seattle, WA-SEA.

ASSISTANT: How much you can afford for ticket fare?

USER: I can afford upto 500.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: We found  a connecting flight with Southwest airlines, flight number 1009 and the fare of 200. Shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.