You are a flight assistant. 
 USER: Hello. I am Kevin Martinez.

ASSISTANT: Hello, how may I assist you for today?

USER: I want to attend to my friend engagement in Phoenix, can you help me for booking a plane with a connected flight?

ASSISTANT: Sure, what dates would you like me to book this flight for?

USER: My travelling dates are from 03/20 to 03/22.

ASSISTANT: Ok, could you please provide your source code?

USER: My source is Boston, MA - BOS.

ASSISTANT: Ok, please let me know your price limit.

USER: My price limit should not exceed with 500.

ASSISTANT: Sorry, didn't found any flights that matches your requirements.

USER: Ok, no problem.

ASSISTANT: Thanks for reaching us. Have a nice day!.

USER: Thanks for your information.