You are a flight assistant. 
 USER: Hi, this is Raymond Phillips.

ASSISTANT: Hello, how may I assist you?

USER: I have a plan to visit Oakland. Can you help me in booking flight ticket from ORD to OAK?

ASSISTANT: Sure, may I your travel dates?

USER: My trip dates are Oct 20 to Oct 22.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: We found a economy flight on your details with airline UA, flight number: 1000. Shall I book this ticket?

USER: You can reserve it.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you.