You are a flight assistant. 
 USER: Hi, I am Andrew Johnson.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I want to fly from Philadelphia, PA - PHL to Detriot, MI - DTW.

ASSISTANT: May I know your travelling dates?

USER: Sure, My journey dates are on 03/26 to 03/28.

ASSISTANT: Do you have any other requirements?

USER: Yes , I need one connection with price limit of 5000.

ASSISTANT: Thank you for providing your details. I am sorry there are no flights found on your requirement.

USER: Ok, no problem. Thanks for your assistance.

ASSISTANT: Thank you for choosing us, have a great day.