You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Daniel Nelson.

ASSISTANT: How may I serve you at this moment?

USER: I want to join the city comedy tour with my friend in JFK. Can you book me a ticket from DEN?

ASSISTANT: Sure, provide your travelling dates.

USER: I would start on Mar 18th and return on Mar 20th.

ASSISTANT: Ok, please provide your connection limit.

USER: I need 1 lay by within my route.

ASSISTANT: Ok, please share your class preference?

USER: I am fine with any class.

ASSISTANT: Ok, do you have any other requirements?

USER: No, I am fine with above essentials.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: There are no flights found on your requested dates. Thank you for reaching us.

USER: That's Ok, thanks for your assistance.