You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Joseph Walker here.

ASSISTANT: How can I aid you?

USER: I am looking for a flight with price below 5000. Can you book it?

ASSISTANT: May I know your nearest airport codes please?

USER: My airport codes for boarding the flight are DEN to PHL.

ASSISTANT: May I know your journey dates please?

USER: My travelling dates for journey are 08/05 to 08/07. I need a connecting flight.

ASSISTANT: Spirit airlines is available in your route with the ticket fare of 100 and with connection flight, shall I proceed with the booking?

USER: Sure, you can book the flight ticket. I am happy with the fare.

ASSISTANT: Your ticket is booked with the flight-1001.

USER: Thank you.

ASSISTANT: Thank you for reaching us.