You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I aid you?

USER: I am Kevin Baker. I want to fly from ATL to DFW, can you please help me to book a flight ticket?

ASSISTANT: When do you want to travel?

USER: My trip dates are 06/11 to 06/13.

ASSISTANT: Do you have any preference?

USER: I need a halt.

ASSISTANT: Ok, please wait.

USER: Ok.

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

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

ASSISTANT:  Thank you for availing us.