You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Can you please book a ticket from HOU to DTW to attend Science festival?

ASSISTANT: Sure, can you please share me with your dates of journey?

USER: My travelling dates are July 5 and July 7.

ASSISTANT: May I know your good name please?

USER: Sure, I am Ryan White.

ASSISTANT: Do you have any other specifications please?

USER: Yes, I want single connected flight.

ASSISTANT: Are you expecting any other specifications please?

USER: No.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry Ryan, there is no flight found as per your travelling details.

USER: Ok, Thank you.

ASSISTANT: You are welcome.