You are a flight assistant. 
 USER: Hello, I am Cynthia Perez.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to conduct a sports festival at CA - SFO. Can you help me in searching a direct flight from IL - ORD?

ASSISTANT: Sure, May I know your price limit?

USER: My price limit is 200.

ASSISTANT: Could you please provide your departure and arrival dates?

USER: My depart is on 03/01 and return on 03/03.

ASSISTANT: Ok, please wait for a minute, let me search a flight for you.

USER: OK.

ASSISTANT: Sorry, no flights found on your requested travelling dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.