You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am George Perez.

ASSISTANT: How may I render you today?

USER: I want to book a flight ticket to Las Vegas, LAS to visit Golden Gate bridge, so help me to find a best flight.

ASSISTANT: Sure, I am glad to help you with that.

USER: Ok.

ASSISTANT: From where do you want to travel?

USER: I planned to start from JFK.

ASSISTANT: On what dates are you willing to travel?

USER: My journey dates are 03/31 to 04/02.

ASSISTANT: Please wait a moment to check the flights availability in your route.

USER: Sure.

ASSISTANT: Yes, there is a connecting flight in your journey and the details are flight number 1016 having with the fare of 300 provided by Frontier airlines. Are you ok with this?

USER: No, don't book it. My fare is only 200.

ASSISTANT: We regret to inform you that there are no flights available in your route within that budget limit.

USER: No issue, thank you for checking.

ASSISTANT: Thank you for reaching us, hope you have a great day.