You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I'm planning to participate in trekking at Oakland hills, can you please book the ticket from IAD to OAK?

ASSISTANT: Do you have any limits on number of connections?

USER: I prefer single connected flight to travel.

ASSISTANT: May I know your planned travel dates?

USER: Sure, my planned departure and return travel dates are 19th and 21st of Nov.

ASSISTANT: Do you have any another specifications on your journey?

USER: I don't have any other specifications.

ASSISTANT: May I know your name for the booking process?

USER: My name is Katherine Anderson.

ASSISTANT: Southwest Airlines providing a flight with the price 200 with single connection. Can I proceed for the booking?

USER: That's fine for me, you can proceed for booking.

ASSISTANT: Your flight ticket reservation done with the flight number 1002.

USER: Thank you so much.

ASSISTANT: Welcome, thank you for reaching us.