You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I aid you?

USER: Can you please help me in booking my flight ticket from DTW to IAD?

ASSISTANT: Sure, May I know your travelling dates?

USER: My planned travel dates are June 05-07.

ASSISTANT: Do you have any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Are there any other preferences?

USER: I want to return in the morning.

ASSISTANT: May I know your name?

USER: Barbara Brown is my name.

ASSISTANT: Sorry, there are no flights found on your data.

USER: OK, no issues. Thank you.

ASSISTANT: Thank you.