You are a flight assistant. 
 USER: Hello, I am Jonathan Hall.

ASSISTANT: Hello, how may I oblige you today?

USER: I would like to participate in the folk festival which was going to held at Las Vegas NV-LAS. Would you please avail me in making a plane reservation from NY-LGA?

ASSISTANT: Sure, we are glad to help you. When are you planning to make your journey?

USER: I am planning to travel on 04/10 and return on 04/12.

ASSISTANT: May I know at what price you are looking for ticket fare?

USER: It a should be under 1000.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: Thanks for holding on, no flights found with your requested details.

USER: Ok, no worries at all. Thank you for your help.

ASSISTANT: Thank you for opting us.