You are a flight assistant. 
 USER: Hello, I am Kevin Perez.

ASSISTANT: Hello. How can I oblige you?

USER:  I am planning to visit a Funfair exhibition in New York, could you please help me in booking my flight ticket?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: May I know your airport codes?

USER: I need to leave from my nearest airport LGA to reach JFK.

ASSISTANT: Do you have any price limit?

USER: Make sure to check a flight with in a price limit of 5000.

ASSISTANT: To proceed booking I need your travelling dates.

USER: I want to travel on 07/26, and need to catch return flight on 07/28.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found on your given requirements.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you for availing us.