You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Benjamin Lopez here.

ASSISTANT: How can I assist you Benjamin Lopez?

USER: Can you please help me in booking a ticket from DEN to DEN? As I'm planning a round trip.

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

USER: Sure, my travel dates are 04/12 and 04/14.

ASSISTANT: Wait a moment please.

USER: Ok, I'll wait.

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

USER: Yes, you can proceed for booking.

ASSISTANT: Your ticket is booked with flight number 1013.

USER: Thank you so much.

ASSISTANT: Thank you, have a safe journey.