You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Please help me to book a flight ticket with single connection from Detroit to exhibit my paintings in Atlanta art gallery.

ASSISTANT: Sure, I can help you out.

USER: Thank you.

ASSISTANT: May I know your travelling dates?

USER: I need to depart on Dec 16th and my return date will be on Dec 18th.

ASSISTANT: Please let me know your name.

USER: I am Patricia Thompson.

ASSISTANT: Where would you like to start and end your journey?

USER: My source point is DTW and my destination point is ATL.

ASSISTANT: Can you share me if you have any airline preference?

USER: I would want to fly a company that is well known, such as AA, UA or Delta.

ASSISTANT: Ok, Please wait a while.

USER: Sure.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: No issues, I'll choose any alternative to reach my destination. Thank you.

ASSISTANT: Thank you for picking us.