You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please book a flight ticket from LGA to BOS?

ASSISTANT: May I know your travelling dates?

USER: Thank you. I have planned my travel  dates as Jan 16 and Jan 18.

ASSISTANT: Please let me know your connection limit?

USER: I am  looking for single connecting flight.

ASSISTANT: Do you have any other preference?

USER: I would prefer business  class only so please make sure that.

ASSISTANT: May I know your name please?

USER: Sure, myself Raymond Harris.

ASSISTANT: Sorry, no flights available on your route.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.