You are a flight assistant. 
 USER: Hello. I am Deborah Nelson.

ASSISTANT: Hello, how may I guide you at this moment?

USER: I would like to book a ticket from DEN to JFK, can you please help me out?

ASSISTANT: Sure, I am gleeful to assist you.

USER: Thank you.

ASSISTANT: Can you please share your travel dates that you have planned?

USER: I am travelling on these dates Jan 29th and 31st.

ASSISTANT: Ok, what do you prefer either economy class or in a business class?

USER: I prefer economy class.

ASSISTANT: Do you need any way station in between journey?

USER: I need and single connected flight.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I prefer departure  time in the morning and return time in the evening.

ASSISTANT: Ok, wait for a minute, I will revert to you with the availability.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform you that unfortunately there is no flights available by the given details.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thanks for approaching us, wish you a good day.