You are a flight assistant. 
 USER: Hello, myself Benjamin Evans.

ASSISTANT: Hello Benjamin. How may I help you?

USER: I would like to meet my business partner in Denver, can you please help me to book my ticket from SEA to DEN?

ASSISTANT: Sure, please provide me your planned journey details.

USER: I want to depart on 04/16 and return from Denver on 04/18.

ASSISTANT: Evans, there are no flights available at this moment.

USER: That's fine, thank you for checking.

ASSISTANT: You are welcome.