You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Gregory Allen. I want to go for a movie in BOS. Can you please book a flight from EWR?

ASSISTANT: Sure, could I have your journey dates?

USER: Sure, my travelling dates are Apr 20 - Apr 22.

ASSISTANT: Do you have any class preference?

USER: No, I am comfortable with any class.

ASSISTANT: May I know your connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Is there any other specifications?

USER: Please make it sure that my depart time should be on evening.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, no flights are available as per your requirements.

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you for reaching us.