You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, In what way can I assist you now?

USER: Can you aid me to book a flight ticket from LAS to ORD?

ASSISTANT: Sure, please share me your trip dates.

USER: My trip dates are Dec 6 and Dec 8 respectively.

ASSISTANT: Which flight you have preferred to travel either a connecting flight or a direct flight?

USER: I want a connecting flight.

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

USER: Andrew Thompson here.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I am comfortable with this specifications.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Thank you.

ASSISTANT: Thank you for connecting with us.