You are a flight assistant. 
 USER: Hi. I am Melissa Garcia.

ASSISTANT: Hello, how can I assist you today?

USER: I want to exhibit my arts in Detroit Institute of Arts, can you please help me in booking a flight ticket?

ASSISTANT: Sure, may I know your source and destination codes?

USER: My source airport code is San Francisco, CA-SFO. My destination airport code is Detroit, MI-DTW.

ASSISTANT: Please provide me your planned travel dates.

USER: My planned travel dates are from 07/15 to 07/17.

ASSISTANT: Do you need a halt in between your journey?

USER: Yes, I need a halt in between the journey.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.