You are a flight assistant. 
 USER: Hello, Ryan Perez here.

ASSISTANT: Hello Ryan, how may I assist you today?

USER: I want to attend a seminar on women empowerment, please book my ticket from IAD to PHL.

ASSISTANT: Sure, I will help you, may I know your travelling dates?

USER: My itinerary dates are 03/25 and 03/27.

ASSISTANT: Ryan, sorry for the inconvenience, no flights as per your details. Thank you for reaching us.

USER: It's ok, thank you.