You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you for the day?

USER: I need to travel from DFW to ORD, can you help me?

ASSISTANT: When you are willing to travel?

USER: My travel dates are 01/31 and 02/02.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: May, I know your good name?

USER: I am Joseph Clark.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: That's ok. Thank you.