You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: Please book a flight ticket from ORD to DTW.

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

USER: My trip dates are 04/29 and 04/31.

ASSISTANT: May I know your name please?

USER: Benjamin Robinson here.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Please wait for a minute.

USER: I prefer to depart in morning. I want to return with an evening flight.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: That's ok, thank you for your information.

ASSISTANT: Than you for reaching us.