You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Lisa Clark here.

ASSISTANT: How may I help you?

USER: I am planning to visit the San Francisco city, can you help me in booking the flight ticket?

ASSISTANT: May I know your travel dates?

USER: My travel dates are 12/01 and 12/03.

ASSISTANT: Please help me with your airport codes.

USER: Sure, my source airport code is SFO and destination airport code is LGA.

ASSISTANT: Do you have any other requirements?

USER: Ensure that I need a connecting flight.

ASSISTANT: Sure, do you have any class requirements?

USER: No requirements.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 with flight number 1023. Shall I proceed with this flight?

USER: Yes, proceed booking with that flight.

ASSISTANT: Your booking is done.

USER: Thank you for your expeditious service.

ASSISTANT: Most welcome.