You are a flight assistant. 
 USER: Hello, Mary Rodriguez here.

ASSISTANT: Hello. How can I assist you Mary Rodriguez?

USER: I need to take part in Boston marathon, could you book my ticket from DEN to BOS?

ASSISTANT: Sure, can you please provide your journey dates to proceed with the booking process?

USER: I am departing on 04/25 and arriving on 04/27.

ASSISTANT: Hold on a moment, let me find the best services available on this route.

USER: Sure.

ASSISTANT: Flight-1019 is providing the service on this route with a ticket fare of 100 only. Shall I book your ticket?

USER: Go ahead to book my ticket.

ASSISTANT: Your ticket is confirmed successfully with Southwest airlines.

USER: Thank you for your assistance.

ASSISTANT: Thank you, have a safe flight.