You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samantha Mitchell.

ASSISTANT: How may I help you?

USER: I am planning to visit Millennium Park at Chicago, could you please help me with booking a flight ticket from LAX to ORD?

ASSISTANT: May I know your dates of travel?

USER: I would like to take off on 07/22 and return on 07/24.

ASSISTANT: Sorry, there is no flight found basis on your details.

USER: That's ok, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Anyways, thank you for the information.