You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My name is Catherine King. I would like to travel from SFO to PHL, could you help me out?

ASSISTANT: Sure, I am here to help you. Could you please share your travelling dates?

USER: My preferable dates are from 11/05 to 11/07.

ASSISTANT: Do you have any price limit?

USER: My price limit is 200.

ASSISTANT: Sorry, there is no flight as per your details.

USER: That's ok.

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

USER: Thank you for your time.