You are a flight assistant. 
 USER: Hi, Paul Brown here.

ASSISTANT: Hello, how may I help you?

USER: I need to book a flight ticket from EWR to DTW to enjoy music festivals. Can you help me in booking a connected flight?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, my departure and arrival dates are May 21 and May 23.

ASSISTANT: Do you have any other specifications to be met?

USER: I am looking for a return time at evening.

ASSISTANT: Are you looking for any class preferences?

USER: No.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: Ok, no worries at all. Thank you for your assistance.

ASSISTANT: Thank you for choosing us.