You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me to book a flight ticket from SFO to LGA?

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

USER: I want to take off on 30 July and 01 Aug.

ASSISTANT: May I know your good name?

USER: I am David Lopez.

ASSISTANT: Do you prefer a connecting or direct flight?

USER: I need a connecting flight.

ASSISTANT: Are there any more specifications?

USER: No.

ASSISTANT: We found a connecting flight 1001 from United airlines with a fare 200.

USER: That's fine, proceed to booking.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.