You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to meet my brother, so please book my ticket from CLT to JFK.

ASSISTANT: Sure, can you please share me your travelling dates?

USER: My itinerary dates are Dec 13 and 15.

ASSISTANT: Do you have any connection limit?

USER: I need single stopover in my journey.

ASSISTANT: Is there any other specifications in your journey?

USER: I want to return from JFK in the evening.

ASSISTANT: May I know your name?

USER: Patrick Baker here.

ASSISTANT: Sorry, there were no flights with your given details.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.