You are a flight assistant. 
 USER: Hello, I am Jacob Robinson.

ASSISTANT: Hello, how can I render you?

USER: I would like to visit Comerica park at Detroit, can you please book me a ticket?

ASSISTANT: Sure, may I know your journey dates?

USER: I would like to leave between 10/08 and 10/10.

ASSISTANT: Do you need any stopover in between journey?

USER: I need direct flight.

ASSISTANT: Can you please let me know your airport codes?

USER: My airport codes are from BOS to DTW.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that there is no flight available on your requested route.

USER: Ok, no problem.

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

USER: Thanks for your service.