You are a flight assistant. 
 USER: Hi. I am Richard Scott.

ASSISTANT: Hello, how can I help you?

USER: I need to book a ticket from DTW to SEA for attending the opening of my brothers coaching centre. Could you please help me in doing that?

ASSISTANT: Sure, I will help you in booking. May I know your journey dates?

USER: My travelling dates are 04/23 and return on 04/25.

ASSISTANT: Do you have any restriction on connection?

USER: Make sure that the price should be below 5000 and with 1 connection.

ASSISTANT: Please wait for a moment. Thanks for waiting, sorry to inform you there is no any flight available on your journey details.

USER: No problem. Thank you for your valuable information.

ASSISTANT: Thank you for reaching us, have a nice day.