You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you help me in booking the flight ticket from OAK to LAX?

ASSISTANT: Sure, can you share your trip dates?

USER: My planned dates of journey are July 15 and July 17.

ASSISTANT: Do you have any preferences?

USER: I prefer to travel in connecting flight for this trip.

ASSISTANT: May I know your name?

USER: My name is Amanda Walker.

ASSISTANT: Sorry, there is no flight on your given dates.

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

ASSISTANT: Thank you for reaching us.