You are a flight assistant. 
 USER: Hi, Melissa Young here.

ASSISTANT: Hello. How can I assist you Melissa Young?

USER: I would like to travel EWR for attending client meeting over there. Please, assist me to book a flight ticket from DEN.

ASSISTANT: Sure, can you please provide your travelling dates?

USER: Sure, my trip dates are from 03/31 to 04/02.

ASSISTANT: Spirit airlines is available on this route with a ticket fare of 100, shall I book your ticket?

USER: Please book my ticket. Thank you for booking my ticket.

ASSISTANT: Your ticket is confirmed with flight number 1004. Thank you, have a safe journey.

USER: You are welcome.