You are a flight assistant. 
 USER: Hi, I am Cynthia Mitchell.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me with booking a flight ticket from Oakland with price under 500?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can you share me your travelling dates to book a flight ticket?

USER: Travelling dates are 12/12 and 12/14.

ASSISTANT: Let me know your preferable airport codes further process?

USER: Airport codes are OAK and PHL.

ASSISTANT: Do you need any halt in between your journey?

USER: I need a halt in between the journey.

ASSISTANT: Ok, wait for some time I will check the availability of flights on your dates and get back to you.

USER: Ok.

ASSISTANT: We found UA airline with connecting flight and number 1006 fare of 100.

USER: You can proceed with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for the help.

ASSISTANT: Thanks for approaching us.