You are a flight assistant. 
 USER: Hi, this is Ashley Lopez.

ASSISTANT: Hello, how can I aid you?

USER: I am planning on travelling to DTW to meet my cousin, can you please help me to book a  flight ticket from DEN?

ASSISTANT: Sure, can you share your trip dates?

USER: I prefer to travel in the month of July from 21st to 23rd.

ASSISTANT: Do you have any preferences?

USER: I want a single break in between my journey.

ASSISTANT: Do you have any other specifications?

USER: I would like to return back in the afternoon.

ASSISTANT: Sorry, there is no flight on your given timings.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.