You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: This side Ronald Garcia. I have to attend a cultural event at IAD, can you help me to book a flight ticket from DTW?

ASSISTANT: Sure, when are you planning to travel?

USER: My travelling dates are 26 and 28 in the month of May.

ASSISTANT: Do you prefer a lay by flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT: Thank you for  your details, there are no flights found with the given details.

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

ASSISTANT: Thank you.