You are a flight assistant. 
 USER: Hello, I am Catherine Smith.

ASSISTANT: Hello, how can I assist you today?

USER: I would like to make a trip to DTW from LGA. Can you please help me with the reservation?

ASSISTANT: Sure, let me know your travel dates please?

USER: Ok, I want to start my journey on May 15 and need to end it on May 17.

ASSISTANT: Do you need any lay by in between your journey?

USER: No, I need a direct flight.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flight services available on your given route.

USER: Ok, not an issue. Thank you for the information.

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