You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Could you please help me to book a flight ticket from IAD to OAK?

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My trip dates are Jan 21 and Jan 23.

ASSISTANT: Is there any connection limit for you?

USER: I need a single connecting flight.

ASSISTANT: Are there any other specifications?

USER: No.

ASSISTANT: Please help me with your name for booking.

USER: I am Dorothy Lewis.

ASSISTANT:   Here, I found a flight for you with 1 stopover in economy class and it costs you 100. Can I proceed?

USER: Ok, proceed.

ASSISTANT: Your booking is confirmed and the flight number is 1024.

USER: Thank you.

ASSISTANT: Thank you for reaching us.