You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Raymond Jackson. I am looking for a flight from MSP to DCA, can you help me out?

ASSISTANT: Can you please tell your travelling dates?

USER: My trip dates are from 05/07 till 05/09.

ASSISTANT: Sorry, there are no flights avaialble with your requested details.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you and have a nice day.