You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello, how can I aid you?

USER: Please help me to book a flight ticket from LAX to LGA.

ASSISTANT: Sure, can you please let me know your travelling dates?

USER: My travelling dates are from July, 03 to July, 05.

ASSISTANT: Do you have any connection limit preference?

USER: I need a single connecting flight.

ASSISTANT: Do you have any specific time concern?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: I prefer a business class to fly.

ASSISTANT: Could you help me with your name please?

USER: Jacob Johnson.

ASSISTANT: Thank you for your details. Sorry, there is no business class available for the mentioned dates.

USER: Thank you for your information.

ASSISTANT: Thank you for reaching us.