You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: My name is Stephen Walker. I would like to travel from IAH to DFW.

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My preferable dates are from 02/22 to 02/24. Please check for flights with 1 connection.

ASSISTANT: Sorry, there is no flight available for your request.

USER: That's ok.

ASSISTANT: Thank you for contacting us.

USER: Thank you, have a good day.