You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you at this minute?

USER: I want to travel from LAX to BOS. Can you help me to book a flight ticket?

ASSISTANT: Ok, I am glad to help you with that. Can I know your planned trip dates?

USER: I want to fly in the flight on Feb 22 and Feb 24.

ASSISTANT: May I know your name?

USER: Richard Gonzalez.

ASSISTANT: Is there any other specifications?

USER: I want to have a connecting flight.

ASSISTANT: Please wait for a minute.

USER: I want to return in evening time.

ASSISTANT: Sorry to say that, there are no flights available based on your planned trip dates.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for reaching us.