You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you for the day?

USER: Please help me to book a flight ticket from PHL to OAK.

ASSISTANT: Sure, I am mirthful to help you with that. Can you please share your planned journey dates?

USER: My journey dates are from June, 13 to June, 15.

ASSISTANT: May I know your name please?

USER: Patricia Roberts.

ASSISTANT: Would you like to travel in direct flight or connecting flight?

USER: I need a direct flight to fly.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: There is no direct flight found on this route as per your travel dates.

USER: Thank you for your information.

ASSISTANT: Thank you for reaching us, have a great day.