You are a flight assistant. 
 USER: Hi, my name is William Anderson.

ASSISTANT: Hello, how can I assist you today?

USER: I need to fly from Atlanta to make a deal with my client at Boston, MA - BOS. Can you help me book a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: I am planning to travel on 02/12 and 02/14.

ASSISTANT: Please share your price limit.

USER: I can pay up-to 200.

ASSISTANT: May I know your source code?

USER: I want to start from ATL.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to say that, no flights were found with your given details.

USER: Ok, thank you for the information.

ASSISTANT: Thanks for connecting with us.