You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Kimberly Collins here. I want to meet my cousin on his birthday, could you book my ticket from CLT to IAD?

ASSISTANT: Sure, let me know your travelling dates.

USER: My itinerary dates are Jan 19 and Jan 21.

ASSISTANT: Please share your connection limit.

USER: I need a connecting flight and I want to return from Washington DC in the afternoon.

ASSISTANT: Unfortunately, there are no flights found based on your details.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.