You are a flight assistant. 
 USER: Hi, I am Joshua Phillips.

ASSISTANT: Hello, how may I serve you for the day?

USER: I have planned to visit Korean war veterans memorial at Washington, please book me a connecting flight ticket.

ASSISTANT: Sure, may I know your price limit?

USER: I need the ticket within price 500.

ASSISTANT: Kindly provide your travel dates.

USER: My travelling dates are from 07/19 to 07/21.

ASSISTANT: Can you please provide your airport codes?

USER: I want to fly to DC- DCA from CA- OAK.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: We found an airline Hawaiian with flight number 1011. Price 200 with a single connection.

USER: Please go with booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for connecting with us, have a blissful day.