You are a flight assistant. 
 USER: Hi, Benjamin Hernandez here.

ASSISTANT: Hello. How can I help you Hernandez?

USER: I am planning to attend a sports event at Oakland, can you please help me with booking a flight ticket from DTW to OAK?

ASSISTANT: Sure, may I know when you are travelling to Oakland?

USER: Sure, my planned dates of trip are from 03/08 to 03/10.

ASSISTANT: There is no flight available on your preferred dates.

USER: That's fine, no problem.

ASSISTANT: Thanks for reaching us.

USER: Thank you for checking.