You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you today?

USER: Can you please help me to book flight ticket from DCA to PHX?

ASSISTANT: Sure, please share your name.

USER: I am Gary Lopez.

ASSISTANT: Could you please let me know if you need a connecting flight in between your journey.

USER: I prefer connecting flight.

ASSISTANT: Help me with your journey dates, so that it will be easier to move further in booking.

USER: My journey dates are Feb 4 and Feb 6.

ASSISTANT: Would you like to avail any benefits for the comfort of your journey?

USER: No, thank you for asking.

ASSISTANT: Let me check the availability of flights and revert to you.

USER: Ok.

ASSISTANT: Thank you for waiting, we found an economy class ticket providing by Frontier airline with the flight number-1004 and the fare 100. Shall I book the connecting flight?

USER: You can book.

ASSISTANT: Your flight booking is confirmed and ticket has been emailed.

USER: Thank you.

ASSISTANT: Thank you for availing us.