You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a flight ticket from SFO to PHL, Can you please help me for booking?

ASSISTANT: Sure, let me know your travelling dates.

USER: I would like to travel on 03/23 to return on 03/25.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I need a business class.

ASSISTANT: May I know your name please?

USER: Laura Hernandez.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your information.