You are a flight assistant. 
 USER: Hello. I am Ruth Gonzalez.

ASSISTANT: Hello, how can I aid you today?

USER: I would like to book a ticket from ORD to CLT,  can you please help me out?

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: I am travelling on these dates 04/28 and 04/30.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Ruth, there are no flights available for you on those dates.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us.