You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me to book a ticket form DEN to CLT?

ASSISTANT: Sure, we are here to help you. May I know your good name?

USER: Linda Scott here.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Please let me know your connection limit?

USER: I would prefer a direct flight.

ASSISTANT: Could I have your journey dates, please?

USER: I want to start on Dec 27 and return on Dec 29.

ASSISTANT: Is there any other preferences?

USER: I want to depart in the morning.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for opting us.