You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: Please help me out in booking the ticket from DTW to IAD.

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

USER: My trip dates will be Oct 19 to Oct 21.

ASSISTANT: May I know your name please?

USER: Debra Green is my name.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any specifications?

USER: No.

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

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.