You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Angela Lewis here.

ASSISTANT: Lewis, how can I render you?

USER: Can you help me to find a flight from EWR to DCA?

ASSISTANT: Please share your travel dates.

USER: My trip dates are 02/25 and 02/27.

ASSISTANT: Please hold on for a while.

USER: Sure.

ASSISTANT: Sorry, no flight is available on your preferred dates.

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

ASSISTANT: Thank you for reaching us.