You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Can you please help me with booking a flight ticket from IAH to DEN?

ASSISTANT: Sure, I am here to help you. Can you please share your travel dates?

USER: My travelling dates are from Dec 10-12.

ASSISTANT: May I know your connection limit?

USER: I prefer to fly in direct flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Ok, please share your name to proceed further.

USER: Sandra Taylor here.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.