You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you?

USER: I need to book a flight ticket from SEA to DEN, can you help me in booking a flight ticket?

ASSISTANT: Sure, I can help you to reserve the ticket. Can I know your journey dates?

USER: Sure, my scheduled dates are Dec 26 and Dec 28.

ASSISTANT: Ok, please tell me your preferred number of connections in between your journey.

USER: I prefer a direct flight.

ASSISTANT: Ok, please tell me your other preferences.

USER: No more preferences.

ASSISTANT: Ok, can I know your name please?

USER: Sure, Gregory Hill here.

ASSISTANT: Sorry to intimate you that, there are no direct flights available in this route on the dates you have mentioned.

USER: Ok, no issues. Thank you.

ASSISTANT: Most welcome. Thank you for choosing us.