You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I got an invitation for Pasadena Strawberry festival from my Mother at HOU, can you help me to book a flight ticket from DTW?

ASSISTANT: Sure, can you please share your journey dates?

USER: My journey dates are from June 28 to June 30.

ASSISTANT: Are you looking for any preferred connections?

USER: I need a way station in between my journey.

ASSISTANT: Do you have any other specifications to be met?

USER: No.

ASSISTANT: Can I have your name to proceed further?

USER: My name is Andrew Thomas.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.