You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Kathleen Nelson. Can you book a flight ticket from AUS to CLT?

ASSISTANT: Sure, please share me your travelling dates?

USER: Sure, My travelling dates are from 05/18 to 05/20.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a connecting flight.

ASSISTANT: Sorry, there were no flights with your specifications.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for reaching us.