You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, may I know your name please?

USER: I am Ryan Parker.

ASSISTANT: How may I help you today?

USER: I have never had an experience of flight journey, so I want to go to my grandmother's home in Los Angeles, CA - LAX. Can you reserve me a flight ticket having a connected flight?

ASSISTANT: Sure, please mention your travelling dates?

USER: I would like to travel and return on the dates of 04/10 and 04/12.

ASSISTANT: May I know your source point?

USER: My origin is from IL - ORD.

ASSISTANT: I am very sorry to inform that no flights are available with your given details.

USER: Ok, not a problem now. Thanks for your great response.

ASSISTANT: Thanks for choosing us, have a good day.