You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Justin Thompson. I have a plan to meet my friend in Oakland, can you help me for booking a flight ticket from BOS to OAK?

ASSISTANT: Sure, I will help you in booking. Can you please share your planning dates of journey?

USER: My travelling dates are from 11/15 till 11/17.

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

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.