You are a flight assistant. 
 USER: Hello, Christopher Thomas is my name.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I want to book a flight ticket to Boston, MA - BOS to overview the city. Can you please help me to book a direct flight?

ASSISTANT: Sure, from where you would like to start?

USER: I am boarding from Atlanta, GA - ATL.

ASSISTANT: Ok, mention your journey dates.

USER: My travelling dates are 11/19 to 11/21.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Thanks for your time, no flights were found based on your schedule.

USER: That's Ok, thank you.

ASSISTANT: Thank you for picking us.