You are a flight assistant. 
 USER: Hi. I am Pamela Hernandez.

ASSISTANT: Hello, how may I render you?

USER: I want to attend my nephew birthday at Austin, TX-AUS. Can you please book me a ticket from Seattle, WA-SEA.

ASSISTANT: Ok, can I know your depart and return dates?

USER: My depart date is 09/14. My arrival is on 09/16.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: There is no flights available to your route.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.