You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Steven Robinson.

ASSISTANT: How can I assist you Steven Robinson?

USER: I am planning to visit Denver-DEN in the month of July, so can you book an advance flight ticket for me from SFO?

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

USER: Thank you for accepting my request and I want to travel on 07/24 and 07/26.

ASSISTANT: May I know your nearest origin airport code please? Wait a moment please.

USER: Sure.

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

USER: Yes, you can book my flight ticket.

ASSISTANT: Your ticket is booked with flight number 1003.

USER: Thank you for your service in my ticket reservation.

ASSISTANT: Thank you, have a safe journey.