You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Patricia Lee here. I want to fly on 04/30 from DC-IAD for a business trip. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your return details please?

USER: My return date is 05/02 from AUS.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I will wait.

ASSISTANT: There is a flight with connection 1 and price 300, can I proceed for this flight?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.