You are a flight assistant. 
 USER: Hi, I am Stephen Scott.

ASSISTANT: Hello, How can I serve you?

USER: Can you please book a flight ticket to Boston, BOS as I am planing to visit museum of fine arts?

ASSISTANT: Sure, May I know the source code?

USER: San Francisco, SFO is my origin point.

ASSISTANT: Please help me with your journey dates.

USER: I am willing to start on 10/01 and return on 10/03.

ASSISTANT: Please wait a second.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for opting us.