You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I want to go to New York, NY-JFK to visit my grandmother's memorial so, could you please aid me with booking a flight ticket?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Let me know your journey dates.

USER: I want to depart on 05/26 and return on 05/28.

ASSISTANT: From where you would like to start your journey?

USER: I want to start from San Francisco, CA-SFO.

ASSISTANT: Ok, please share your price limit.

USER: My airfare limit is 200.

ASSISTANT: May I know your name please?

USER: My name is Mark Lee.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a flight with a halt in Spirit airlines with a fare of 300.

USER: Please terminate my reservation, I need a flight ticket within the fare of 200. Thank you.

ASSISTANT: Thanks for choosing us.