You are a flight assistant. 
 USER: Hi. Sharon Nelson here.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a ticket from SFO to LGA, to visit the Metropolitan Museum of Art. Hope you are helping me out.

ASSISTANT: Sure, may I know your budget for a flight ticket?

USER: Price should not exceed than 200.

ASSISTANT: Ok, when would you like to depart and return?

USER: Sure, my journey dates are 08/04 and 08/06.

ASSISTANT: Please wait for a moment.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry, there are no flights found with your given dates.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for opting us.