You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I have to meet my colleague in Atlanta, can you please help me to find a flight from Chicago?

ASSISTANT: Sure, may I know your trip dates?

USER: Thank you. My planned trip dates are Aug 19 and Aug 21.

ASSISTANT: Please mention your travelling airport codes.

USER: My nearest airport codes are ORD and ATL.

ASSISTANT: Do you have any specifications?

USER: I am willing to travel in a single connecting flight.

ASSISTANT: I would like to know your good name?

USER: My name is Katherine Edwards.

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

USER: It's ok, not an issue with that. Thank you for your time.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.