You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to travel from BOS to LAX, can you help me to book a flight ticket?

ASSISTANT: Sure, let me know your travelling dates.

USER: My travel dates are Aug 13 and Aug 15.

ASSISTANT: Please share your connection limit.

USER: My connection limit is 1.

ASSISTANT: Do you have any class preference?

USER: Yes, I would like to prefer business class flight ticket.

ASSISTANT: May I know your name?

USER: My name is Donna Hernandez.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: Sorry, there are no flights found based on your details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.