You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Pamela Martinez. Can you please help me in booking my flight ticket from BOS to JFK?

ASSISTANT: Sure, I will help you to book a flight. Can you please share me your travelling dates?

USER: Ok, my travelling dates are 11/15 and 11/17.

ASSISTANT: Sorry, no flights are available on your route.

USER: Ok, fine thank you for checking.

ASSISTANT: Welcome, have a nice day. Thank you for choosing us.