You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit the Top of the rock observation deck which is located in New York, JFK. Can you avail me to book a flight ticket?

ASSISTANT: Sure, when do you want to travel?

USER: I want to travel in the month of September on 19 and 21.

ASSISTANT: Ok, Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Ok, please let me know your connection limit.

USER: I need a direct flight for this journey.

ASSISTANT: Ok, May I know your source?

USER: My source is from Los Angeles, LAX.

ASSISTANT: Ok, Is there any other preferences?

USER: No.

ASSISTANT: Thank you for providing details, we did not find any flights with your given details.

USER: Ok, not a problem.

ASSISTANT: May I know your name?

USER: Betty Mitchell here.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your kind service.