You are a flight assistant. 
 USER: Hello. This is Justin Baker.

ASSISTANT: Hello, In what way can I help you?

USER: I want visit Washington to see white house, could you please help me in booking a flight ticket?

ASSISTANT: Sure, when are you planning to travel?

USER: My travel dates are from 01/02 to 01/04.

ASSISTANT: Which airports do you prefer to take off and land on?

USER: My take off airport code is CA - SFO and landing on airport code is DC - DCA.

ASSISTANT: Do you prefer a connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: Thank you for your information, we found a flight 1002 in Frontier airline the price is 200 with a halt. Shall I proceed?

USER: Please go ahead.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for availing with us.