You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, How could I help you today?

USER: I want go to holiday vacation at Denver,CO-DEN.Can you please help in booking?

ASSISTANT: Sure, May I know your origin and travelling dates?

USER: Sure.My source is from New York,NY-JFK.My travel dates are from 01/10 to 01/12. Make sure that the price limit should be 500 with a single connection.

ASSISTANT: Sure, May I know your name to proceed for further process of booking?

USER: Sure, I am Jacob Perez.

ASSISTANT: Ok, Please wait a moment.

USER: Ok.

ASSISTANT: Thank you for your patience. There is no flight found on your planned dates.

USER: Ok. Thank you for your information.

ASSISTANT: Thank you for contacting us, Have a nice day.