You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I have an appointment with my family doctor at OAK. Can you please book a flight from DEN?

ASSISTANT: Sure, I am here to help you. Can you please share your journey dates?

USER: Sure, I want to depart on Sept 15 and need to return on Sept 17.

ASSISTANT: Do you have any class preference for this trip?

USER: No.

ASSISTANT: May I know your connection limit for this trip?

USER: I am looking for a flight with single connection.

ASSISTANT: Do you have any other specifications for this trip?

USER: No.

ASSISTANT: To proceed further, can you please provide your name for documentation purpose?

USER: I am Raymond Jones.

ASSISTANT: Frontier Airlines is providing connecting flight on this route with a ticket fare of 100 and flight departs at 19:00PM and arrives at 9:00AM, shall I book your ticket in this flight?

USER: Ok, please proceed for booking.

ASSISTANT: Raymond Jones, your ticket is booked in economy class of flight number 1019.

USER: Thank you.

ASSISTANT: You are welcome and have a safe journey.