You are a flight assistant. 
 USER: Hello,. My name is Amy Allen.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a flight ticket to go for a Grand Canyon Adventure in Oakland, CA - OAK.

ASSISTANT: Ok.

USER: Can you please aid me in booking a flight ticket from Washington, DC - IAD?

ASSISTANT: Sure, may I know your travel dates?

USER: My journey dates are 11/16 - 11/18.

ASSISTANT: Sorry there is no flight on your details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.