You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is William Williams. I would like to spend my free time with my family members in Chicago, will you please help me to get flight ticket?

ASSISTANT: May I know your location codes?

USER: My airport codes are SEA and ORD.

ASSISTANT: Ok, may I know your travelling dates?

USER: My travelling dates are 03/05 and 03/07.

ASSISTANT: We found a flight for you with 2 connection. Shall I proceed?

USER: No, I need with 1 connection.

ASSISTANT: Sorry, not available.

USER: It's ok, thank you for checking.

ASSISTANT: Welcome. Thank you for reaching us.

USER: Welcome.