You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Betty Harris.

ASSISTANT: Betty Harris, how can I aid you today?

USER: Please book a flight ticket on dates 12/10 and 12/12.

ASSISTANT: Sure, I am here to help you. May I know your airport codes please?

USER: My airport codes are BOS and DCA.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Ok.

ASSISTANT: I found a flight for you with Frontier Airlines and it costs you 100. Shall I proceed to reserve a seat in this single connecting flight?

USER: Yes, please.

ASSISTANT: Your ticket has been booked with 1001 flight number.

USER: Thank you for the help.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.