You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Can you please help me in booking my flight ticket from BOS to DTW.

ASSISTANT: Ok, please provide your travelling dates?

USER: Sure, my travel dates are Aug 17-19.

ASSISTANT: Which class you are going to prefer?

USER: For this trip, I want to fly in economy class.

ASSISTANT: Do you prefer connecting flight or direct flight?

USER: I need a connecting flight.

ASSISTANT: Do you prefer any specifications?

USER: I prefer to fly in normal cost airlines.

ASSISTANT: Sorry to say, there are no flights present on your route.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Can you please share your name for documentation purpose?