You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Could you please help me to book a flight ticket from DEN to attend an interview in IAH?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Sure, I need to depart on 05/11 and my return date will be on 05/13.

ASSISTANT: Do you have any preferences about flight connections?

USER: I prefer to fly in a connecting flight.

ASSISTANT: Do you have any preferences about class?

USER: No, please proceed.

ASSISTANT: Please mention your name.

USER: I am Richard Hernandez.

ASSISTANT: The Frontier airlines providing an economy class flight with price 300 and the connections 1. Shall I confirm your ticket?

USER: That's ok, please proceed with the booking.

ASSISTANT: Your ticket is booked. The flight number is 1019.

USER: Thank you for your assistance in booking.

ASSISTANT: Welcome, have a great day.