You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Ronald Jones.

ASSISTANT: Nice to meet you.

USER: I am planning to book a ticket from DEN to PHX. Can you please help me out?

ASSISTANT: Sure, I can help you. May I know your planned travel dates please?

USER: I am planning to travel on Jan 12 and return back on Jan 14.

ASSISTANT: May I know in which class do you prefer to travel?

USER: No.

ASSISTANT: Do you have any specifications regarding your departure and return time?

USER: I am planning to return back on morning.

ASSISTANT: Please let me know if you have any other specifications.

USER: I am looking for a connecting flight.

ASSISTANT: Ok, please wait. Sorry, there are no flights available for you on those dates with your given details.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for choosing us.