You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: George Parker here. I want to attend a Seminar Oakland. Can you please help me for booking the flight ticket?

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

USER: My travelling dates are from 12/21 to 12/23.

ASSISTANT: Can I know your airport codes too?

USER: My airport codes are from ORD to OAK.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Ok, your ticket has been booked with flight number 1002.

USER: Thanks for helping me.

ASSISTANT: Thank you for choosing us.