You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: This is Carol Harris, want to travel from Atlanta, GA-ATL to Philadelphia, PHL.

ASSISTANT: OK. Can I know your travelling dates?

USER: Sure, I want to travel from 12/15 to 12/17 for Atlanta trip.

ASSISTANT: OK. Flight number is 1015 charges 300 only with 1 connecting flight. Is it OK with you?

USER: That's perfect, please book it for me.

ASSISTANT: Sure.

USER: May I know the airline name please?

ASSISTANT: Your ticket is booked. AA airlines.

USER: OK, thank you, for your help for booking me a ticket.

ASSISTANT: Most welcome.