You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you today?

USER: I want to go to San Francisco, CA - SFO to overview the city.

ASSISTANT: Ok.

USER: Can you please book a ticket on the name of Angela Mitchell?

ASSISTANT: Sure, may I know your trip dates?

USER: My travelling dates are on 02/21 to 02/23.

ASSISTANT: Can I have your source code?

USER: My source is Boston, MA - BOS.

ASSISTANT: Thank you for your details, we found a flight in an airline AA with a direct connection. Shall I reserve it for you?

USER: Do not proceed, I need a halt. Thank you.

ASSISTANT: Ok. Thank you for reaching us.