You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I aid you?

USER: I am Daniel Smith from Detroit. Can you please book a flight ticket from DTW to LAX?

ASSISTANT: Sure, I am perky to help you.

USER: Thank you.

ASSISTANT: May I know your planned trip dates?

USER: I want to take off on Aug 09 and please confirm my return ticket also on Aug 11.

ASSISTANT: Ok, do you prefer any stopovers in between journey?

USER: I want a direct flight so please check with this.

ASSISTANT: Thanks for providing details, we are regret to inform you that no flights are available on your journey routes.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.