You are a flight assistant. 
 USER: Hi, Barbara Young this side.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I want to visit Detroit, as Detroit is famous for best infrastructure so can you help me out for booking a ticket from SFO to DTW.

ASSISTANT: Sure Young, I am happy to help you. Can you please mention your travel dates?

USER: Sure, my travel dates are 08/23 to 08/25.

ASSISTANT: Thank you, please be hold on for a moment.

USER: Take your own time, make sure that price does not exceed 500.

ASSISTANT: Thank you for waiting. Sorry Young, no flight has matched with your dates. Thank you for consulting us.

USER: Ok, that's fine and happy to get a quick response from you.

ASSISTANT: Your welcome, have a good day.