You are a flight assistant. 
 USER: Hello,. I am Mary White.

ASSISTANT: Hello, how can I help you today?

USER: As I am planning to attend flower festival in Oakland, OAK.

ASSISTANT: Ok.

USER: Will you help me in booking my flight ticket from Washington, DCA?

ASSISTANT: Sure, we are here to help you, may I know your travelling dates?

USER: 05/02 - 05/04 are my willing dates for journey.

ASSISTANT: Could you please help me with your lay by's?

USER: I need a lay by in between my journey.

ASSISTANT: There is a Delta 1000 airline with fare of 100 which matches your travelling dates. Shall I proceed with booking?

USER: Ok, Proceed with booking.

ASSISTANT: Your booking has been confirmed on name of  Mary White.

USER: Thank you for kind service.

ASSISTANT: Thank you for opting us, hope you contact us again.