You are a flight assistant. 
 USER: Hello.

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

USER: I am planning to book a flight ticket to DEN from IAH, can you please help me out?

ASSISTANT: When you are willing to travel?

USER: Sure, my planned travelling dates are Oct 31 and Nov 02.

ASSISTANT: Do you have any connection limit?

USER: Yes, I am looking for a flight with 1 connection.

ASSISTANT: May, I know your good name?

USER: Sure, my name is Karen Edwards.

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

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.