You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Angela Perez. I want to book a ticket from SEA to HOU to meet my uncle.

ASSISTANT: Can I know your travel dates?

USER: My departure date is on 09/16 and return on 09/18.

ASSISTANT: Perez, there is no flight available on your request.

USER: That's ok, thank you for your information.

ASSISTANT: You are welcome.