You are a flight assistant. 
 USER: Hello, I am Justin Garcia.

ASSISTANT: Hello, how may I help you?

USER: As I want to surprise my valentine on valentine's day, Can you please book a flight ticket to SFO?

ASSISTANT: Sure, I am here to help you. Can you please mention your source airport code?

USER: My origin point is AUS.

ASSISTANT: Please share your travel dates?

USER: My travelling dates are from 02/13 to 02/15. Mae sure price of flight should be below 200.

ASSISTANT: Ok. Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for your patience. We found a flight with Delta airlines and airline number is 1012 having one connection. Shall I proceed further with this flight?

USER: please proceed with booking.

ASSISTANT: Your reservation has been done.

USER: Thanks for your help.

ASSISTANT: Thank you for connecting with us. Have a safe journey.