You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Deborah Harris here. Do you have any flight from IAD to EWR?

ASSISTANT: Sure, I am here to help you with that. Can I know your planned trip adtes?

USER: My travel dates are 06/03 and 06/05.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there are no fight's available based on your travelling.

USER: That's fine, thanks for your information.

ASSISTANT: Thank you for reaching us.