You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to book a flight with business class. Could you please help me with booking a flight ticket?

ASSISTANT: May I know your trip source and destination?

USER: Sure, my source is BOS and destination is LGA.

ASSISTANT: What are your travel dates?

USER: My travelling dates are Jan 15 and Jan 17.

ASSISTANT: Do you need any connections?

USER: I need a lay by in between the journey.

ASSISTANT: May I know your name for booking?

USER: I am Joshua Martin.

ASSISTANT: Sorry to say that, there is no flight found with your details.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.