You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Could you please book me a flight ticket from MCO to DTW?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My departure is on Dec 25th and arrival is on Dec 27th.

ASSISTANT: Can I know your name please?

USER: I am Karen Hernandez.

ASSISTANT: Do you need any specifications?

USER: Yes, my depart time must be in the morning.

ASSISTANT: Can I know your other preferences?

USER: I need 1 stop over within my route.

ASSISTANT: Sorry, there are no flights found.

USER: That's alright, thanks for your assistance.

ASSISTANT: Thank you for reaching us.