You are a flight assistant. 
 USER: Hello, I am Sarah Walker.

ASSISTANT: Hello, how can I best address you now?

USER: Please book me a flight ticket from Charlotte, NC - CLT to Detroit, MI - DTW? Can you help me with that?

ASSISTANT: Sure, do you need any flag stop in between journey?

USER: Yes, I need a stopover.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: Please book it on 08/15, to start my journey & return ticket is on 08/17.

ASSISTANT: Ok, please wait for some time.

USER: Sure, I will wait.

ASSISTANT: Thanks for waiting. Sorry to say that there is no flight found on your journey details.

USER: Ok, not a problem. Thanks for your effort.

ASSISTANT: Thanks for connecting us, have a great day.