You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

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

ASSISTANT: Sure, ,may I know your travel dates?

USER: I would like to take off on Sept 26 and return on Sept 28.

ASSISTANT: Please share me your name.

USER: My name is Angela White.

ASSISTANT: Do you have any specifications?

USER: I prefer economy class.

ASSISTANT: Sorry, there is no flight available right now.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you.

USER: You are welcome.