You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Myself Alexander Clark. Could you please help me with booking a flight ticket from JFK to DFW?

ASSISTANT: Sure, can you please share your travel dates?

USER: My planned travel dates are from Jan 23 to Jan 25.

ASSISTANT: May I know your connection limit?

USER: Yes, I need a direct flight in my journey.

ASSISTANT: Do you have any class preference?

USER: I prefer to book my ticket in economy class.

ASSISTANT: Do you have any other specification that you are looking for?

USER: I would like to return in the morning time.

ASSISTANT: Alexander Clark, I am sorry to inform you that there is no flight available at your request.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: You are welcome. Thank you for contacting us.