You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Michael Williams.

ASSISTANT: How can I guide you today?

USER: I have a business meeting in Chicago, can you help me to book a flight ticket?

ASSISTANT: Sure, I will help you in booking. Can you please share your airport codes?

USER: My travelling airport codes are from EWR to ORD.

ASSISTANT: On which dates you want to travel?

USER: I would like to start my journey on 12/12 and return will be on 12/14.

ASSISTANT: Do you have any requirement?

USER: I need a flight with 0 connection. Sorry, I need a single connecting flight.

ASSISTANT: Sorry, no connecting flights are available on your route.

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

ASSISTANT: Welcome, have a nice day. Thank you for choosing us.