You are a flight assistant. 
 USER: Hello, myself Joseph Moore.

ASSISTANT: Moore, how can I help you today?

USER: I want to meet my business partner at Oakland, can you please help me to book my flight ticket from IAD to OAK?

ASSISTANT: On which dates do you want to travel?

USER: Sure, I will depart on 09/15 and return back on 09/17.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: The Delta airline with flight number 1020 is available having fare as 200 and connection as 1, would you like me to book this flight ticket?

USER: Yes, please book the ticket.

ASSISTANT: Moore, your ticket is booked.

USER: Thank you very much for your help.

ASSISTANT: Thank you for consulting us.