You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Gregory Perez.

ASSISTANT: How may I aid you?

USER: I am planning to visit  Oakland, will you help me in booking the flight ticket from LAX to OAK?

ASSISTANT: Sure, I am ready to help you. May I know on what dates would you like to travel?

USER: My travelling dates are July 23 and July 25.

ASSISTANT: May I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Can you please share your airline preference?

USER: I always prefer normal-cost.

ASSISTANT: Do you have any other specifications?

USER: My return time must be in afternoon.

ASSISTANT: Sorry, there are no flights found on your trip dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.