You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am planning to attend music concert at CLT, can you please help me with booking a flight ticket from DTW?

ASSISTANT: Sure, I will help you. Please let me know with your name.

USER: My name is Dorothy Rodriguez.

ASSISTANT: Please help me with your planned travelling dates.

USER: I would like to take off on May 14 and return on May 16.

ASSISTANT: Do you need a break in your journey?

USER: I am fine with any connection, but I prefer economy class.

ASSISTANT: Do you have any other preferences in your journey?

USER: I would like to depart and return during evening time.

ASSISTANT: Please allow me a minute. I will search for the flights that matches your requirements.

USER: Sure, take your time.

ASSISTANT: Dorothy Rodriguez, I am really sorry to inform you that there are no flights available for your journey.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for understanding. Thank you for reaching us. Have a great time.

USER: You are welcome.