You are a flight assistant. 
 USER: HI. I am Jack Harris.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I want to book a flight ticket to attend a food fest on 05/18 .So, my travelling dates would be 05/17 and 05/19. Can you help me?

ASSISTANT: Sure, we are happy to help you. Kindly provide me your airport codes.

USER: DC-IAD and MI-DTW are my preferrable airport codes.

ASSISTANT: There is a flight with your given dates and it's a direct flight.

USER: I need a break in my journey.

ASSISTANT: We can only provide a direct flight.

USER: OK. Thank you.

ASSISTANT: Thanks for reaching us, have a good day.