You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I want to celebrate my birthday at Las Vegas, so please book my ticket from DFW to LAS.

ASSISTANT: Sure, I am here to help you with that. Can I know your preferable travel dates?

USER: My itinerary dates are May 27 and May 29.

ASSISTANT: May I know your name please?

USER: Steven Hill here.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I want to depart from Dallas in the evening.

ASSISTANT: Would you like to board a direct or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: There is a connecting flight-1010 available in Frontier Airlines with a fare of 100. Shall I proceed with booking?

USER: Book my ticket.

ASSISTANT:  Steven Hill, your booking is done in economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us, have a safe journey.