You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please search a flight ticket from LAX airport on 05/17 date?

ASSISTANT: Sure, can you please help me with the destination airport code and the return date?

USER: My destination code is EWR and my return date is 05/19.

ASSISTANT: May I know your name to proceed further?

USER: Ok, myself Patrick Evans.

ASSISTANT: Thank you for the details.

USER: Ok.

ASSISTANT: Patrick, there is a flight available with price 700 and the connection is 1 with Delta airline. Would you like me to proceed with the booking?

USER: Sorry, I need my flight ticket with in 500 fare.

ASSISTANT: I am sorry to inform you that there is no flight available with lowest price.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for contacting us.