You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what help are you seeking for?

USER: I am Stephanie Brown, want to travel from EWR to DCA. Please help me in booking my ticket.

ASSISTANT: Yes definitely, may I know your preferred dates to travel?

USER: My preferable travel dates are from 04/06 to 04/08.

ASSISTANT: Could you please wait a while I'll be back with your flight details.

USER: Sure.

ASSISTANT: Sorry to say you that there are no flights on your planned dates.

USER: It's ok, not an issue.

ASSISTANT: Would you like to prefer any other help from our end?

USER: Anyway, thank you for your help. No, thanks for your concern.

ASSISTANT: Thank you.