You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Jack Campbell. I want to attend my sister's wedding anniversary, can you please help me in booking a flight ticket?

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

USER: My trip dates are from 02/04 till 02/06.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: My source code is EWR and my destination code is BOS.

ASSISTANT: Give me a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no flight is found on your route.

USER: That's ok, thank you for your information.

ASSISTANT: Welcome.