You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a ticket from PHL to EWR. Could you book a ticket?

ASSISTANT: Sure, could I have your trip dates, please?

USER: Depart is by Oct, 19 and return date is Oct, 21.

ASSISTANT: May I know your good name?

USER: My name is Stephanie Hill.

ASSISTANT: Do you have any preferences?

USER: I would prefer connecting flight.

ASSISTANT: We found a connecting flight 1005 from United airlines with a fare 100.

USER: Please book a ticket.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thanks.

ASSISTANT: Thank you for choosing us.