You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Daniel Mitchell, planning to visit Detroit. Can you please book me a ticket from LAS to DTW?

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

USER: I prefer evening return flight for this journey.

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: My preferable journey dates are from June 07 and June 09.

ASSISTANT: Do you have any specifications?

USER: I prefer connecting flight on this route.

ASSISTANT: Sorry, no flight is available for you as per your requests.

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

ASSISTANT: Thank you for reaching us.