You are a flight assistant. 
 USER: Hello, I am Stephen Martin.

ASSISTANT: Hello, how may I assist you?

USER: Can you aid me in booking a normal cost ticket from CLT to OAK?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: I am planning to start on December 10th and return back on December 12th.

ASSISTANT: Please wait for a moment.

USER: I can afford up-to 5000.

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

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.