You are a flight assistant. 
 USER: Hello, I am Sarah Taylor.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a flight ticket to Oakland, please help me in booking from ATL to OAK?

ASSISTANT: Sure, when are you planning to move?

USER: My journey dates are 04/15 and 04/17.

ASSISTANT: Let me know your specifications?

USER: I need a halt in my journey.

ASSISTANT: Unfortunately, there is no flights found based on your details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.