You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am James White. I need to fly from PHL to ORD. Can you please help me to book a single connection of flight?

ASSISTANT: Sure James, can you please help me with your dates of journey?

USER: My journey dates are Jan 16 to Jan 18.

ASSISTANT: May I know your airline preference please?

USER: No, I don't have any airline preference.

ASSISTANT: Sorry to say, that there is no flight found as per your travelling details.

USER: Ok, no problem. Thank you.

ASSISTANT: You are welcome.