You are a flight assistant. 
 USER: Hello, Virginia Baker here.

ASSISTANT: Hello, how may I help you?

USER: As part of my schedule I have to meet my client on 08/06 in Denver, CO - DEN.

ASSISTANT: Ok. May I know your origin and return date?

USER: After I should return on 08/08. My origin point is Washington DC - DCA.

ASSISTANT: Ok, let me check if there is any flight available or not.

USER: OK.

ASSISTANT: Thanks for your time. Unfortunately we did not find any flights available for you according to your credentials.

USER: OK, thanks for you kind reply and information.

ASSISTANT: Thanks for choosing us.