You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I would like to visit golden gate bridge at San Francisco, SFO. Can you please book a ticket with my name Sarah Nelson?

ASSISTANT: Sure, can you please provide me your travel dates?

USER: My journey dates are from 06/24 to 06/26.

ASSISTANT: May I know your origin airport code?

USER: It is Washington, DCA.

ASSISTANT: Do you have any specification?

USER: Price should not exceed 500. I need a halt.

ASSISTANT: We found a flight on your details with airline Delta, flight number: 1009.

USER: Please proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you.