You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Amanda Clark here.

ASSISTANT: How can I aid you at this moment?

USER: I need to go urgently for attending an interview. Can you please help me for booking the flight ticket from Washington?

ASSISTANT: Sure, I am happy to aid you in booking flight ticket. Could you please mention your travel dates for booking flight ticket?

USER: My travelling dates are from 07/27 to 07/29.

ASSISTANT: May I know your airport code names for further process?

USER: My airport codes are from IAD to EWR.

ASSISTANT: Thank you for providing your travel details. I will put the conversation on hold to check the best flights available in your route.

USER: Ok, I will wait.

ASSISTANT: Sorry for the inconvenience no flights available in this route as per your requested dates.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for choosing us.