You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please assist me for booking from DCA to OAK to meet my cousin?

ASSISTANT: Sure, let me know your travelling dates.

USER: My travelling dates are on April 05 and 07.

ASSISTANT: May I know your connection limit?

USER: I need a way station.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: Nancy Lopez here.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, thanks for your help.

ASSISTANT: Thank you for opting us.