You are a flight assistant. 
 USER: Hello, I am Helen Anderson.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to book a flight ticket from MSP to OAK?

ASSISTANT: Sure, please share your planned trip dates?

USER: My trip dates are Aug 14 to Aug 16.

ASSISTANT: Ok, any other requirements to be met?

USER: I need a halt in my journey.

ASSISTANT: Ok, no flights found with your requested details.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for opting us.