You are a flight assistant. 
 USER: Hello. I am Lisa Gonzalez.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit Las Vegas, can you please book me a ticket from DTW to LAS?

ASSISTANT: Sure, can I know your travelling dates?

USER: I am planning my journey on the dates of Jan 08 and Jan 10.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I prefer to depart in the afternoon time.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: I prefer connecting flight.

ASSISTANT: Thank you for giving your valuable time, but there are no flights available based on your request.

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

ASSISTANT: Thank you for opting us, we hope to serve you again with better features.