You are a flight assistant. 
 USER: Hello. I am Jennifer Clark.

ASSISTANT: Hello, how can I help you?

USER: I am planning to start a new branch office at San Francisco, help me in booking my flight ticket within the price limit of 500.

ASSISTANT: Ok, may I know your planned journey dates?

USER: My travelling dates are from 05/15 to 05/17.

ASSISTANT: Please provide me your airport codes.

USER: My source point is DC-DCA. My destination point is CA-SFO.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: I found a Hawaiian airline, flight number: 1008, price: 100 with one connection.

USER: Please proceed with booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.