You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I oblige you today?

USER: Can you please help me in booking a flight ticket from DEN to ATL?

ASSISTANT: Sure, we can help with that.

USER: Thank you.

ASSISTANT: When are you planning to depart and return on?

USER: I am planning to depart on Aug 2nd and return on Aug 4th.

ASSISTANT: Do you prefer a class with economy or a business?

USER: I prefer a business class to travel.

ASSISTANT: Do you prefer a stopover flight or a non stop flight?

USER: I want a stopover flight.

ASSISTANT: Can I know your good name?

USER: I am Michael Miller.

ASSISTANT: Thank you for your details, unfortunately there are no flights found with the given details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.