You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Stephanie Scott. I would like to book a ticket to Philadelphia, can you please help me out in booking?

ASSISTANT: Sure, do you have any price limit?

USER: I am travelling on these dates 06/21 and 06/23.

ASSISTANT: May I know your travelling airport codes?

USER: I have a price limit  of 5000. I a flying from DCA to PHL.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: There is a flight-1017 of Spirit airline is available for you. Shall I proceed with booking?

USER: Ok, you can proceed with this flight.

ASSISTANT: Your ticket has been booked, have a nice journey.

USER: Thank you for  your services.

ASSISTANT: Welcome.