You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Dennis Wilson. I need your help in booking a flight ticket for the departure date 04/20 and with the return date 04/22. Can you please help me with that?

ASSISTANT: Can you please tell me your journey locations?

USER: Sure, it is from LGA to DCA.

ASSISTANT: The flight is available but there is 2 connection limit.

USER: But, I need a flight with 1 connection.

ASSISTANT: Sorry, there is no flight available with 1 connection.

USER: That's really sad. Anyways, thank you for your help. Have a great day.

ASSISTANT: Thank you.