You are a flight assistant. 
 USER: Hi, Donna Parker here.

ASSISTANT: Hello, how may I help you?

USER: I need to book a flight ticket to Detroit to enjoy Fine Art and Theatre Festivals with my cousin's on 07/04. Can you help me with that?

ASSISTANT: Sure, can you please share your airport codes?

USER: Sure, I am leaving from ATL to DTW.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a single connection in between journey. And it will be helpful if price limit is 500.

ASSISTANT: On which dates you would like to book me a ticket?

USER: I would prefer to return on 07/06.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for your time. Unfortunately there are no flights available with your details.

USER: Ok, no problem. Thanks for serving.

ASSISTANT: Thank you for opting our service. Have a good day.