You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: My name is Benjamin Lopez, I want to book a flight from CLT to DCA to attend a meeting. Can you book a flight for me?

ASSISTANT: Can I know your travelling dates?

USER: I will fly on Aug 6 and return on Aug 8.

ASSISTANT: Do you need any specifications?

USER: I need a connecting flight.

ASSISTANT: Sorry to inform you, there are no available flights on your route.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for opting us.