You are a flight assistant. 
 USER: Hello. I am Kathleen Nelson.

ASSISTANT: Hello. How may I help you?

USER: I have to meet  my family doctor to discuss about the condition of my uncle, so can you please help me in flight ticket booking with a connection limit of 1?

ASSISTANT: May I know your travelling dates?

USER: I want to travel on Mar 10 and return back on Mar 12.

ASSISTANT: May I kow your deisred airpor codes?

USER: Sure, my desired airport codes are from MSP to IAD.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say, there are no flights available for your journey.

USER: Ok, I can prefer any other source to reach my location. Thank you for your help.

ASSISTANT: Thank you for choosing us.