You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to go Washington next month for attending a birthday party there, can you please book a flight ticket from SFO airport to IAD?

ASSISTANT: Yes, may I know your preferable trip dates?

USER: My departure date is 08/07 and please book my return ticket also on 08/09.

ASSISTANT: May I know your name?

USER: Sure, my name is Christine Hill.

ASSISTANT: I found a connecting flight of 1 in Southwest airlines, can I confirm your ticket booking?

USER: I am ok with this flight, please proceed.

ASSISTANT: OK, your ticket booking is successfully done.

USER: Thank you for your help.

ASSISTANT: Welcome.