You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

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

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I want to depart on Mar 6 and need to return on Mar 8.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight in an normal-cost airline.

ASSISTANT: On what name, do I need to reserve the ticket?

USER: John Wright.

ASSISTANT: Sorry, no flights are available as per your requirements.

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you for opting us.