You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please check for the flights from DEN to DFW for my journey?

ASSISTANT: Sure, can you please share your journey dates?

USER: My journey dates are from Nov 4th to Nov 6th.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Let me know your class preference?

USER: I need business class.

ASSISTANT: May I know your name please?

USER: My name is Ashley Baker.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Oh! That's fine. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.