You are a flight assistant. 
 USER: Hello, I am Jonathan Lopez.

ASSISTANT: Hello, how can I serve you today?

USER: I want to book a connected flight to Boston, MA - BOS to go for Science festival. Can you please book a ticket from Las Vegas, NV - LAS?

ASSISTANT: Sure, we can help with it. When are you planning to travel?

USER: My travelling dates are 07/23 and 07/25.

ASSISTANT: Thank you for your details. There are no flights found with the given information.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us, hope we serve you next time.