You are a flight assistant. 
 USER: Hi, I am Samuel Adams.

ASSISTANT: Hello, In what way I can help you?

USER: I am planning  to visit Tiden Regional park in Oakland could you help me for booking my flight ticket. My price should not exceed 200 with single connection.

ASSISTANT: Ok, may I know your preferable dates?

USER: My journey dates are from 04/17 to 04/19.

ASSISTANT: Ok, please share your airport codes?

USER: I would like to depart from GA-ATL and my destination as CA-OAK.

ASSISTANT: Ok, give me a moment.

USER: Ok.

ASSISTANT: Thanks for your valuable time but there are no flights found for you.

USER: Ok, thanks for your assistance.

ASSISTANT: Thank you, have a great day.