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

ASSISTANT: Hello. How can I help you today?

USER: I want to take a part in a rally to support the poor children at Dallas, help me in booking my flight ticket from Oakland CA-OAK.

ASSISTANT: Sure. Please share your travelling dates.

USER: My travelling dates will be 12/25 to 12/27.

ASSISTANT: May I know your source code?

USER: My source is CA-OAK.

ASSISTANT: Please provide me your destination code?

USER: My landing point is TX-DFW.

ASSISTANT: We found a Frontier airline flight 1001 with single connection and price 100.

USER: Please proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for availing with us. Thank you for your service.

ASSISTANT: Thank you for availing us.