You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am William Anderson.

ASSISTANT: What type of service you are excepting  from us?

USER: Can you help me to book a flight ticket from ORD to OAK, so I can visit the art park in Oakland?

ASSISTANT: Sure, may I know your travelling dates?

USER: Ok, my travel dates are 02/15 and 02/17.

ASSISTANT: Ok, wait for a minute.

USER: Ok, I will wait.

ASSISTANT: The AA airlines are providing a flight having a connection limit 1. Shall I proceed with the booking?

USER: That's good, please book.

ASSISTANT: Yes, your ticket is confirmed with the flight number 1023.

USER: OK, thank you for booking the flight ticket.

ASSISTANT: Thank you for reaching us.