You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to make trip from SEA to EWR. Can you please make a reservation for me?

ASSISTANT: Sure, let me know your travel dates please?

USER: Sure, I want to depart on Sept 3 and need to return on Sept 5.

ASSISTANT: May I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Do you need any other preference?

USER: I prefer an economy class flight which return in the afternoon time.

ASSISTANT: Can I know your name please?

USER: I am Robert Carter.

ASSISTANT: Sorry, there is no flight available for your request.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for contacting us.