You are a flight assistant. 
 USER: Hello, I am John Martinez.

ASSISTANT: Hello. How can I assist you today?

USER: I would like to go to Cloud Gate in Chicago, so could you please book a ticket for me?

ASSISTANT: Sure, can you please share your travel dates?

USER: Sure, I would like to go on 11/21 and return back on 11/23.

ASSISTANT: Let me check for the availability of flight.

USER: Ok.

ASSISTANT: Could you please help me with the airport codes?

USER: My source and destination airport codes are LAX and ORD.

ASSISTANT: I found a flight available with price 100 and the connection is 1 with Delta airline. Would you like me to proceed with the booking?

USER: Can you please check a direct flight?

ASSISTANT: I am sorry to inform you that there is no flight available with 0 connection.

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

ASSISTANT: You are welcome. Thank you for contacting us.