You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you aid me to book a flight ticket from OAK to EWR?

ASSISTANT: Sure, could I have your trip dates, please?

USER: My trip dates are Jan 15 and Jan 17 respectively.

ASSISTANT: Please let me know your connection limit.

USER: I want a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No other preferences.

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

USER: James Walker here.

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

USER: Thank you.

ASSISTANT: Thank you for reaching us.