You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I planned to meet my cousin in BOS, can you please help me to book a flight ticket from EWR?

ASSISTANT: May I know your trip dates?

USER: I prefer to travel on Apr 17 and Apr 19.

ASSISTANT: Do you prefer any connections?

USER: I prefer to travel in a connecting flight.

ASSISTANT: May I know your specifications?

USER: I don't have any specifications.

ASSISTANT: Sorry to inform you that unfortunately there is no flights available by the given details.

USER: Ok, no problem.

ASSISTANT: May I know your name?

USER: I am Raymond Hernandez.

ASSISTANT: Thank you.

USER: Thank you for your information.