You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I need to travel LAS and DEN, can you reserve flight ticket?

ASSISTANT: May I know your travelling dates?

USER: My travelling dates are July,13 and July,15.

ASSISTANT: Let me know your connection limit.

USER: I prefer single connecting flight.

ASSISTANT: Any more specifications?

USER: No.

ASSISTANT: May I know your name?

USER: Myself Dorothy Wright.

ASSISTANT: I found a connecting flight-1009 in economy class, shall I proceed?

USER: Proceed with the reservation.

ASSISTANT: Ok, booking is done on UA airlines.

USER: Thank you for reserving my flight ticket.

ASSISTANT: Welcome Dorothy Wright.