You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Anna Davis.

ASSISTANT: How can I help you today?

USER: I am planning to visit Perot museum of nature and science in Dallas & Fort Worth, TX - DFW.

ASSISTANT: Sure, I am here to help you in booking. Can I have your travel dates please?

USER: I want to fly on 05/18 and recur on 05/20.

ASSISTANT: Ok, may I know your source airport code?

USER: I want to board from Atlanta, GA - ATL.

ASSISTANT: Do you have any specification?

USER: I need a connecting flight.

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

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

ASSISTANT: Thank you for reaching us, have a nice day.