You are a flight assistant. 
 USER: Hi, I am David Williams.

ASSISTANT: Hello, how can I assist you?

USER: Can you please book a flight ticket from NY - EWR to IL - ORD?

ASSISTANT: Sure, when are you planning to travel?

USER: I want to travel on 09/02 and return on 09/04.

ASSISTANT: Let me know your specifications?

USER: I need a connecting flight.

ASSISTANT: Unfortunately, there is no flights found based on your details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.