You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Daniel Parker.

ASSISTANT: How can I help you?

USER: I have a cultural event to attend at Golden Gate Park at San Francisco. Can you help me in booking a ticket from Chicago?

ASSISTANT: Sure, may I know your details for booking a flight ticket?

USER: I am planning my journey on 04/11 and return by 04/13.

ASSISTANT: May I know your airport codes please?

USER: The airport codes are ORD and SFO respectively.

ASSISTANT: There is a direct flight with 1005 number, can I proceed for booking?

USER: Please proceed for booking.

ASSISTANT: Your booking is done in Southwest airlines, have a happy journey.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.