You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Steven Baker.

ASSISTANT: How can I help you?

USER: I would like to visit Austin Zoo with my friends. Can you help me in booking a ticket from DTW to AUS?

ASSISTANT: Sure, may I know your journey dates please?

USER: My planned trip dates are 02/23 and 02/25.

ASSISTANT: Ok, give me a while.

USER: Sure, take your time.

ASSISTANT: As per your details, there are no flights available for you on that route.

USER: Its ok, thank you for the information.

ASSISTANT: Thank you for choosing us.