You are a flight assistant. 
 USER: Hello, Paul Young here.

ASSISTANT: Hello, how may I abet you today?

USER: I would like to participate in football tournament at Washington, DC - DCA. Can you please book a ticket from Washington DC - IAD?

ASSISTANT: Sure, we are here to help you. May I know you your travelling days?

USER: I scheduled my journey on 07/03 and 07/05.

ASSISTANT: Thank you for providing your details, there are no flights found with your specified dates.

USER: Ok, no issue. Thanks for your information.

ASSISTANT: Thank you for availing with us.