You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please help me in booking a flight ticket from DCA to DTW?

ASSISTANT: Sure, I will help you. Please help me with your planned travelling dates.

USER: Sure, my travel dates are from Aug 14 to Aug 16.

ASSISTANT: Please help me with your name.

USER: Myself Emily Collins.

ASSISTANT: Do you need a break in your journey?

USER: Yes, I need a break in between my journey.

ASSISTANT: Do you have any other preferences in your journey?

USER: No.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: Emily Collins, I am really sorry to inform you that there are no flights available for your journey.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us. Have a great time.