You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am John Davis.

ASSISTANT: How may I guide you today?

USER: I want to do a documentary on historical construction named Wrigley mansion at San Francisco, SFO.

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: My journey dates are from July 21 to July 23.

ASSISTANT: May I know your source code?

USER: DC-DCA is my source airport code.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Is there any connection limit?

USER: I need a way station in between journey.

ASSISTANT: I found a ticket for you with price of 300, flight number is 1006 and connection is 1 in economy class. is it ok for you?

USER: Sure, you can proceed for booking.

ASSISTANT: I confirmed your ticket successfully with Delta airline.

USER: Thank you.

ASSISTANT: Thank you for reaching us.