You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Elizabeth Gonzalez, I need to book a flight with a halt to Austin, TX - AUS. Will you help me in booking a ticket from MI - DTW?

ASSISTANT: Sure, I am here to help you. May I know when you have  planned to travel?

USER: I would like to start on 12/04 and catch my return flight on 12/06.

ASSISTANT: Wait a minute please I will get back to you.

USER: Sure.

ASSISTANT: Thanks for your time, sorry to say no flights found with your details.

USER: No problem, thanks for your service.

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