You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Please help me to book a flight ticket from ATL to OAK.

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from Aug, 10 to Aug, 12.

ASSISTANT: On which name should I reserve the flight ticket?

USER: I am Mary Martinez.

ASSISTANT: Do you have any specifications?

USER: I need a single connecting flight and I prefer to travel in normal-cost airlines.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: There is a flight with one connection and the price is 200 in American Airlines, can I proceed with the reservation?

USER: Please proceed.

ASSISTANT: Your ticket has been reserved with the flight number 1024.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching our service.