You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Karen Davis. I am planning to book a ticket to visit my cousin's home at PHL. Can you please help me out to book a ticket from LAS?

ASSISTANT: Sure Davis, may I know your respective dates of travel please?

USER: These are my travelling dates 12/26 and return back on 12/28.

ASSISTANT: There is a flight with the connecting flight of fare 100 and the airline naming as Spirit, are you ok with this ticket? Your booking is done with the flight number 1005. Thank you.