You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Please help me in booking a direct flight from DEN to SEA.

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My trip dates are Feb 02 to Feb 04.

ASSISTANT: Do you require any stopovers in your journey?

USER: I have already mentioned above.

ASSISTANT: May I know your name to proceed further?

USER: Stephen Davis here.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I prefer to travel in economy class.

ASSISTANT: Please wait a minute I will get back to you.

USER: Ok.

ASSISTANT: Thank you for your time, sorry no flights found with your details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us, have a good day.