You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Cynthia Martin, want to travel from ORD to MSP. Please help me in booking my ticket.

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, my travelling dates are from 04/09 to 04/11.

ASSISTANT: Please hold on a moment.

USER: Sure.

ASSISTANT: Cynthia, no flights has been found on your planned journey dates.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for approaching us.