You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am George Hernandez. Can you please help me in flight ticket booking process from DTW to SEA?

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

USER: Thank you for your response, I want to take off on Sept 18 and book my return ticket also on Sept 20.

ASSISTANT: Do you have any specifications?

USER: I want to return in afternoon time.

ASSISTANT: Is there any class preference for you?

USER: I need a connecting flight so please check with this.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

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

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.