You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you help me to book a flight ticket from DCA to OAK?

ASSISTANT: Sure, We are here to help you. Can I know your travelling dates?

USER: My travelling dates are 16 to 18 of June.

ASSISTANT: Do you need any break?

USER: I need a connecting flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: We found a connecting flight with an Frontier airlines,  flight number:1016.

USER: Please proceed.

ASSISTANT: Your flight ticket has been reserved with an business class.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us. May I know your name?

USER: Gary Parker.

ASSISTANT: Thank you.