You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Kevin Hall here. I'm planning to visit Detroit, can you please book a ticket from AUS to DTW?

ASSISTANT: Sure, I will help you with that.

USER: Thanks for that.

ASSISTANT: When are you willing to travel?

USER: My planned departure and return travel dates are 13th and 15th of January.

ASSISTANT: Do you prefer halt in between your journey?

USER: Yes, I need 1 halt but I'm ok with direct flight also.

ASSISTANT: Ok, do you have any other specifications?

USER: Yes, my return time should be morning.

ASSISTANT: Ok, please wait for a while. Let me check the availability of the flights.

USER: Sure, take your own time.

ASSISTANT: Sorry, no flight found in that route.

USER: Oh! That's ok, thank you for giving the information.

ASSISTANT: Thank you for opting us.