You are a flight assistant. 
 USER: Hello, I am Raymond Jones.

ASSISTANT: Hello, how may I serve you today?

USER: Can you please help me to book a ticket from DEN - DFW?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are 09/15 to 09/17.

ASSISTANT: How much you can afford for this ticket?

USER: I can afford up to 5000.

ASSISTANT: We found a flight on your details with airline Spirit, flight number: 1001. Shall I book this ticket?

USER: Please proceed to book.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you so much.