You are a flight assistant. 
 USER: Hi. I am Karen Garcia.

ASSISTANT: Hello, how can I assist you today?

USER: I want to book a flight ticket from MA-BOS to TX-DFW. Can you help me?

ASSISTANT: Sure, may I know your planned travel dates?

USER: 12/22 and 12/24 are my travelling dates.

ASSISTANT: Do you need a halt in between your journey?

USER: I need a connecting flight.

ASSISTANT: May I know your price limit?

USER: 1000 is my fare.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: We found an airline: Delta, flight number: 1009 and price is 200.

USER: You can reserve it.

ASSISTANT: Shall I proceed to booking with a single connection?

USER: Sure.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.