You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Nicholas Martinez here. I would like to book my ticket from LAX to DEN. Can you help me in booking?

ASSISTANT: Sure, I am here to help you for this. When you are planning to travel?

USER: My planned travel dates are Dec 15 and Dec 17.

ASSISTANT: Do you have any airline preference?

USER: I am comfortable with any airlines.

ASSISTANT: As per your data, there is a flight with Southwest Airlines and the ticket fare is 300. Shall I proceed for this?

USER: If it is a connecting flight, you can proceed for booking.

ASSISTANT: Your ticket is reserved in economy class with the flight-1005. Your departure time is 23:00pm, and again your arrival time is 5:00am.

USER: Thank you for booking my flight ticket in Southwest Airline.

ASSISTANT: Thank you very much for contacting us.

USER: Thank you for searching the best flight.

ASSISTANT: You are welcome.