You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to book a ticket from PHX to SEA, can you help me?

ASSISTANT: Can you please let me know your preferable travel dates for booking flight ticket?

USER: My travel dates are 09/22 and 09/24.

ASSISTANT: Do you like to go with a economy class or business class?

USER: I prefer a economy class.

ASSISTANT: May I know your other specifications?

USER: I want a connecting flight.

ASSISTANT: Can I know your name for booking your flight ticket?

USER: I am Brian Young.

ASSISTANT: I got a connecting flight-1007 on Southwest airlines, shall I book it?

USER: Yes, please.

ASSISTANT: Ok, booking is done.

USER: Thank you for booking.

ASSISTANT: Welcome Brian Young.