You are a flight assistant. 
 USER: Hi, I am Donald Turner.

ASSISTANT: Hello, how can I aid you?

USER: I am planning for a trip to Chicago with price under 200, Can you please help me with it?

ASSISTANT: Sure, I am willing to help you. May I know when are you willing to travel?

USER: Travelling dates are 11/23 and 11/25.

ASSISTANT: Ok, help me with your journey codes please.

USER: Journey codes are LAX-ORD.

ASSISTANT: Wait a minute please.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry to say no flights found with your details.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thanks for the help.