You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Helen Roberts here. I want a connecting flight from EWR to DEN, can you please help me in booking my flight ticket?

ASSISTANT: Ok, can I have your travelling dates too?

USER: Sure, my trip dates are from 03/25 to 05/27.

ASSISTANT: Can you recheck your return journey dates for confirmation purpose?

USER: Ok, my trip dates are from 03/25 to 03/27.

ASSISTANT: There is a connecting flight-1002 with connection 1 and price 100, shall I proceed?

USER: Ok, please proceed with booking.

ASSISTANT: Ok, booking is done on Southwest airline.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.