You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to book a flight ticket from BOS to ORD to meet my brother. Can you please help me with booking a flight ticket?

ASSISTANT: Sure, can you please let me know your trip dates?

USER: My travelling dates are Dec 21 and Dec 23.

ASSISTANT: Do you need any break in between your journey?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Is there any other criteria?

USER: No.

ASSISTANT:  If you can help me with your name, I can check with the availability of flights.

USER: I am Virginia Roberts.

ASSISTANT: Thanks for sharing your details, we are unable to provide flight in between your journey routes.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.