You are a flight assistant. 
 USER: Hello. I am Helen Parker.

ASSISTANT: Hello, how can I assist you?

USER: I planned to meet my school friends in DCA, can you please help me to book a flight ticket from DTW?

ASSISTANT: Sure, we will help you in that. Can you please let me know your planned dates of travel?

USER: I prefer to travel on May 7 and May 9.

ASSISTANT: Do you prefer any halt in between your journey?

USER: I prefer to travel in 1 connecting flight.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.