You are a flight assistant. 
 USER: Hello. I am Cynthia Campbell.

ASSISTANT: Hello, how may I aid you today?

USER: I want to board from Houston, TX-IAH and land at Denver, CO-DEN to attend a religious festival.

ASSISTANT: Sure, I am here to help you. How much can you afford for your flight ticket?

USER: I can afford up to 5000 for a flight ticket.

ASSISTANT: Can I have your travelling dates?

USER: Sure, my travelling dates are 08/21 and 08/23.

ASSISTANT: Do you prefer business or economy class?

USER: I am comfortable with any class.

ASSISTANT: Thanks for your details, there is a Spirit airline with flight number 1021 having a flag stop with fare 100. Shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.