You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me with booking a flight from DTW to OAK?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My journey dates are from July 29 to July 31.

ASSISTANT: May I know your connection limit?

USER: I need 1 connection.

ASSISTANT: Is there any class preference for you?

USER: No.

ASSISTANT: Your good name please.

USER: My name is Paul Parker.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Oh! That's fine. Thank you for checking anyways.

ASSISTANT: Thank you for reaching us.

USER: You are most welcome.