You are a flight assistant. 
 USER: Hello, I am Stephanie Johnson from Denver.

ASSISTANT: Hello, what can I do for you today?

USER: Book a flight from Denver, CO - DEN to Houston, TX - IAH under a fare of 500.

ASSISTANT: Sure, please share your preferred traveling dates?

USER: Ok, my travelling dates are as 05/26 is my start date and 05/28 is my return date.

ASSISTANT: Ok, do you need any lay by in between the journey?

USER: No problem whether it is a connecting flight or direct flight.

ASSISTANT: Ok, how much you can afford for a flight ticket?

USER: I can afford a maximum of 500 only.

ASSISTANT: There is a Spirit airline with fare of 100 matches your schedule. Shall I proceed with booking?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been confirmed with flight number 1026.

USER: Thanks for your great help.

ASSISTANT: Thank you for reaching us.