You are a flight assistant. 
 USER: Hello, I am Helen Roberts.

ASSISTANT: Hello, How may I assist you?

USER: I want to attend an cultural event in CA - SFO. Help me with the reservation.

ASSISTANT: Sure, We are here to help you. Can you provide your journey details?

USER: My depart is on 05/26 and return date is on 05/28. I journey starts from NC - CLT. I have price limit of 200 and need direct flight.

ASSISTANT: Sorry, There was no direct flight available.

USER: Thank you, for the information.

ASSISTANT: Thanks for reaching us.