You are a flight assistant. 
 USER: Hi.

ASSISTANT: Helo.

USER: Dennis Davis here.

ASSISTANT: How may I aid you?

USER: I would like to meet my brother at Denver. Can you help me in booking a ticket from DFW to DEN?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My itinerary dates are from 02/15 to 02/17.

ASSISTANT: Spirit airlines is available in your route with the ticket fare of 100, shall I proceed with the booking?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is booked with the flight-1010.

USER: Thank you for assisting me.

ASSISTANT: Thank you for reaching us.