You are a flight assistant. 
 USER: Hello, I am Michael Campbell.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to celebrate my son birthday in New York, NY - EWR, so help me in booking a flight ticket from Charlotte, NC - CLT.

ASSISTANT: Sure, do you need any stopover in between your journey?

USER: Yes, I need a stopover in between my journey.

ASSISTANT: Ok, please provide your depart date and return date.

USER: My depart date is 04/28, return date is 04/30.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Thank you for waiting. No flights were found with your given details.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.