You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I heard that Top of the rock observation deck is the best place to visit in New York, Where we can stand and feel the entire New York city, So can you help me to book a flight to LGA.

ASSISTANT: Sure, I am here to help you with this.

USER: Thank you.

ASSISTANT: Can you please provide your origin airport code?

USER: My origin is from Boston, BOS.

ASSISTANT: May I know your preferable journey dates please?

USER: My preferable journey dates are Mar 11 and 13.

ASSISTANT: Do you have any connection limit preference?

USER: I need a break in between my journey.

ASSISTANT: Do you have any class preference for this trip?

USER: I am comfortable with any class.

ASSISTANT: Do you have any specific depart and arrival timings?

USER: I want to return in the afternoon time, because I have some work in the morning time.

ASSISTANT: May I know your good name please?

USER: Sure, Anna Roberts here.

ASSISTANT: Anna Roberts, there is no flight services are available on this route with your preferences.

USER: Oh, It's very sad to hear from your side. Anyways, thank you for sharing the information.

ASSISTANT: Thank you for contacting us.