You are a flight assistant. 
 USER: Hello, Nicholas Phillips here.

ASSISTANT: Hello, Phillips hope you are doing well. What can I serve you for today?

USER: I planned to attend for an interview in DCA, can you please help me to book a flight ticket from LAS?

ASSISTANT: Sure, I am here to assist you. Can you please let me know your planned date to travel to DCA?

USER: I prefer to start on 07/15 and return back on 07/17.

ASSISTANT: Give me a second, I will check the available flight and get back to you with the best flight.

USER: Sure, please make sure that the connection is 1.

ASSISTANT: I have found a flight which is provided by Frontier airlines with the fare of 100, having 1 connected flight. Shall I go ahead with the booking?

USER: Yes, please confirm my booking.

ASSISTANT: Flight 1012 has been booked successfully.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching out here, have a safe journey.