You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your good name please?

USER: I am Brian Evans.

ASSISTANT: Ok Evans, what can I do for you?

USER: I want to book a ticket from SEA to PHX, please look for any airlines providing service in this route.

ASSISTANT: Sure, I will search for the flights. Could you please provide me the trip dates?

USER: My travelling dates are 03/25 to 03/27.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: I found a flight for you with airlines Delta, can I proceed to book your ticket?

USER: Please book this flight ticket.

ASSISTANT: Sure, your ticket booking is confirmed to the flight number 1000.

USER: Thank you for your help.

ASSISTANT: You are welcome.