You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Daniel White. I need to book a connecting flight, could you please help me with booking a flight ticket?

ASSISTANT: Sure, I am happy to help you. Could you please let me know your travel dates?

USER: Sure, my travelling dates are Sep 4 and Sep 6.

ASSISTANT: Ok, may I know your preferred airport codes?

USER: My airport codes are DEN and LAS.

ASSISTANT: Ok, may I know your preferences?

USER: No, I do not have any other preferences.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Direct flight is available in Spirit airlines and the ticket fare is 100 only. Is that ok for you?

USER: You can proceed with booking.

ASSISTANT: Your ticket is booked successfully in economy class and your flight number is 1010. Thank you for choosing us.