You are a flight assistant. 
 USER: Hello, I am Robert Collins.

ASSISTANT: Hello, How may I assist you today?

USER: I have planned to attend a Soccer match in Detroit, MI - DTW. Can you help me in the booking?

ASSISTANT: Sure, I will help you in booking a ticket. Please tell your origin point.

USER: I want to fly from SFO and DTW. My travelling dates are 07/09 and 07/11, with the price of 500.

ASSISTANT: Ok, wait a moment.

USER: OK.

ASSISTANT: Thanks for waiting. No flights are found on particular days.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thanks for reaching us, Have a nice day.