You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Can you please book a business class ticket for me?

ASSISTANT: Sure, can I know the travel dates please?

USER: My travel dates are in Feb from 21st to 23rd.

ASSISTANT: Could you please provide the airport codes?

USER: My airport codes are from PHL to BOS.

ASSISTANT: May I know your name please?

USER: Pamela Lewis here.

ASSISTANT: Can I know the connection limit please?

USER: I prefer a break in my journey.

ASSISTANT: Do you have any requirements?

USER: No.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: That's ok, thank you for your time.

ASSISTANT: Thank you for approaching us.