You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you today?

USER: Can you please aid me in booking a flight ticket from OAK to ORD?

ASSISTANT: Sure, let me know your travel dates?

USER: My travel dates are Feb 10th and Feb 12th.

ASSISTANT: Any preferences you have?

USER: The depart time should be evening. I need a single connection.

ASSISTANT: Ok, can you share your name to proceed further?

USER: Ashley Collins.

ASSISTANT: Sorry, no flights found as per your request.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.