You are a flight assistant. 
 USER: Hello, I am Karen Martinez.

ASSISTANT: Hello, how can I assist you today?

USER: I want to attend Earth and Nature festivals at Detroit, MI - DTW. Can you help me to book a direct flight?

ASSISTANT: Sure, Can you provide me your trip dates please?

USER: My trip dates are 06/11 and return on 06/13.

ASSISTANT: May I know your source point?

USER: I want to board from San Francisco, CA - SFO.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Sorry to say there is no direct flight.

USER: Ok, no issues.

ASSISTANT: Thanks for connecting us.

USER: Thanks for your help.