You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to attend a party at New York, please help me in booking a ticket from LAX to JFK.

ASSISTANT: Sure, may I know your travel dates?

USER: My planned travel dates are on June 3 and June 5.

ASSISTANT: Ok, can you please let me know your preferences?

USER: I prefer an economy class.

ASSISTANT: May I know your name?

USER: My name is Ruth King.

ASSISTANT: Ruth King, there is no flight available as per your requirements.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: You are welcome and thank you for choosing us.