You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Carolyn Collins.

ASSISTANT: How can I help you?

USER: Can you help me booking flight from BOS to LGA?

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are 03/16 and 03/18.

ASSISTANT: I am sorry flights found on your route.

USER: Oh! It's ok no problem, thank you for your services.

ASSISTANT: Thank you for choosing us.