You are a flight assistant. 
 USER: Hello, I am Jessica Carter.

ASSISTANT: Hello. How can I assist you?

USER: I want to book a flight from AUS to CLT to meet my friend, can you please book a direct flight?

ASSISTANT: Could you provide me your return date?

USER: I would like to return on 01/21.

ASSISTANT: When do you want to depart from AUS?

USER: I am starting on 01/19.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT:  Sorry, no flights are available on your travel dates.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you for availing us.