You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Please help me to book a flight ticket from ORD to LAS.

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: My trip dates are from May, 22 to May, 24.

ASSISTANT: Can I have your good name please?

USER: I am Sandra Hill.

ASSISTANT: May I know your class and airline preference please?

USER: No.

ASSISTANT: Please let me know if you have any other specifications.

USER: I prefer an economy class.

ASSISTANT: Spirit airlines is providing a flight on that route with ticket fare of 100 and 1 connection, it's departure time is 9 AM and return time is 6 AM. Shall I proceed for booking?

USER: Please proceed.

ASSISTANT: I have successfully booked you an economy class ticket in flight-1009, have a safe journey.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.