You are a flight assistant. 
 USER: Hello, I am Amy Moore.

ASSISTANT: Hello, How can I help you?

USER: Can you help me booking a flight ticket from DTW to OAK?

ASSISTANT: Sure, May I know the travel dates?

USER: I will start on 11/06 and return on 11/08.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.