You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me with booking a flight from LAX to DEN?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My journey dates are from Mar 16 to Mar 18.

ASSISTANT: Can you please share your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your name please?

USER: I am Helen Thomas.

ASSISTANT: United airlines is providing connecting flight for you with the fare of 100 in economy class, shall I proceed with the booking?

USER: Book it.

ASSISTANT: Your ticket is booked with the flight-1020.

USER: Thank you for helping me with booking.

ASSISTANT: Thank you for choosing us.