You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: I am Joshua Williams.

ASSISTANT: Ok.

USER: I am willing to book a flight ticket from the airport DTW to EWR. Can you please assist me in booking?

ASSISTANT: Sure, can you please mention the travelling dates of your journey?

USER: Thank you. I want to start my journey on the date 10/08 and returning back on 10/10.

ASSISTANT: Ok, please wait for a while.

USER: Ok, take your own time to check the flight.

ASSISTANT: Sorry Joshua, there are no flights found on your requested dates.

USER: It's ok, thank you for checking the flight for me and providing the information.

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

USER: Most welcome.