You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: Can you help me in booking a flight ticket from SFO to ORD?

ASSISTANT: Sure, May I know your travelling dates?

USER: I want to travel on 02/28, and return on 03/01.

ASSISTANT: Do you have any preferences?

USER: I want to depart in the afternoon time.

ASSISTANT: Can I know your name?

USER: I am Carolyn Collins.

ASSISTANT: Thanks for your details, there are no flights found on your data.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you.