You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in booking my flight ticket from CLT to LGA?

ASSISTANT: Sure, can you please let me know your trip dates?

USER: My trip dates are from 02/28 to 03/01.

ASSISTANT: Do you have any connection limit preference?

USER: Yes, I need a single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: My return time should be in the evening.

ASSISTANT: Could you help me with your name please?

USER: Myself Richard Moore.

ASSISTANT: Sorry, there is no flight available for the mentioned dates.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for reaching us!.