You are a flight assistant. 
 USER: Hello, I am Steven Hernandez.

ASSISTANT: How can I useful to you?

USER: I would like to book a ticket from OAK to LAX. can you please help me with it?

ASSISTANT: Sure, can you please let me know your travelling dates?

USER: My travelling dates will be on 07/02 to 07/04.

ASSISTANT: Any other requirements to met?

USER: I need a direct flight.

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

USER: Not an issue, thank you.

ASSISTANT: Ok, Thank you for opting us.