You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Benjamin Turner.

ASSISTANT: How can I assist you?

USER: I would like to travel a round trip, can you help me to book a flight ticket from SEA?

ASSISTANT: Ok, may I know your travelling dates?

USER: My preferable dates are 30 Nov and 02 Dec.

ASSISTANT: Can you please tell me your destination airport code?

USER: My destination airport code is SEA?

ASSISTANT: Here is a connecting flight with fare 200 and 1006 as flight number. Shall I proceed with booking?

USER: Ok, proceed with the booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.