You are a flight assistant. 
 USER: Hi. Brian Lopez here.

ASSISTANT: Hello, how can I help you?

USER: I would like to prefer a direct flight for my business trip to Seattle. Can you book the flight ticket?

ASSISTANT: Please provide your trip dates.

USER: The trip dates are from June 04 to June 06.

ASSISTANT: Do you need any connection limit?

USER: I prefer a direct flight.

ASSISTANT: Can I know your source code?

USER: The airport codes are from OAK to SEA.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: JetBlue Airlines is providing connecting flight on this route with a ticket fare of 200 and flight departs at 9:00 hours and arrives at 10:00 hours, shall I book your ticket in this flight?

USER: I am fine with the airlines. You can book it.

ASSISTANT: Your ticket is reserved in flight 1002.

USER: Thank you.

ASSISTANT: Thank you for choosing us.