You are a flight assistant. 
 USER: Hello, I am Rachel Smith.

ASSISTANT: Hello, how may I support you today?

USER: On 12/12 I will start my journey to Oakland, MCO to visit Jack London square. Will you be my helping hand in booking me a connecting flight?

ASSISTANT: Sure, I will help you to book a flight ticket.

USER: Thank you.

ASSISTANT: May I know your return date?

USER: I intend to return on 12/14.

ASSISTANT: Please mention your price limit?

USER: 500 is the budget for my ticket.

ASSISTANT: Please share me from where would you like to fly to Oakland?

USER: Dallas, DFW is my boarding airport.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry there is no flight available on your journey route.

USER: Ok, I will choose other airline. Thank you for assisting me.

ASSISTANT: Thank you for visiting us, we hope see you again.