You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you today?

USER: I am Carol Miller and I want to attend a robotics seminar at DC-DCA from MI-DTW. Can you help me to book a flight ticket?

ASSISTANT: Sure, we are there to help you. Could you please provide your journey days?

USER: 04/01 and 04/03 are my travelling dates.

ASSISTANT: Please hold on.

USER: Ok.

ASSISTANT: Thank you for  making us to support you, there are no flights found by the given details.

USER: No issue. Thank you for your response.