You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I need to travel PHL and SFO, can you please reserve flight ticket?

ASSISTANT: Sure, can you please forward your journey dates?

USER: My travelling dates are Apr,21 and Apr,23.

ASSISTANT: May I know your name please?

USER: Myself Laura Lopez.

ASSISTANT: May I know your connection limit please?

USER: I prefer one connecting flight.

ASSISTANT: Do you have any more specifications?

USER: No.

ASSISTANT: We found a connecting flight with Frontier airlines, flight number 1028, price is 100 in economy class.

USER: Please proceed with the reservation.

ASSISTANT: The reservation of your ticket has been done.

USER: Thank you.

ASSISTANT: Thank you for approaching us.