You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Deborah Lopez.

ASSISTANT: How may I help you?

USER: Can you please book a flight ticket from ORD to DCA?

ASSISTANT: Sure, may I know your journey dates?

USER: Sure, I need to travel on dates of 03/02 and 03/04.

ASSISTANT: Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: I am sorry to say that there are no flights that are moving to your region on your dates.

USER: It's ok fine, no problem. Anyway, thank you for your time.

ASSISTANT: You are most welcome and have a nice day.