You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I would like to book a ticket from ORD to SFO, can you please help me out?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: I am travelling on these dates July 15th and 17th.

ASSISTANT: Sure, can I know your connection limit?

USER: I need single connected flight.

ASSISTANT: Sure, can I know your name?

USER: Dennis Gonzalez here.

ASSISTANT: Do you have any other requirements to be met?

USER: I prefer return time in the afternoon.

ASSISTANT: There is a economy class flight 1015 of American Airlines, can I proceed?

USER: Ok, you can proceed.

ASSISTANT: Your booking is done, have a safe journey.

USER: Thank you for your services.

ASSISTANT: Welcome.