You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to participate in Music festival at Oakland, OAK. Can you please book a ticket from IAD?

ASSISTANT: Sure, help me with the trip dates?

USER: My travelling dates are Oct 23 and Oct 25.

ASSISTANT: May I know your name please?

USER: I am Frank Baker.

ASSISTANT: Do you have any preferences?

USER: I want single connected flight.

ASSISTANT: We found an airline: Hawaiian, flight number: 1025 and price is 100 with one connection. Shall I proceed to book?

USER: Ok, please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.