You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Amy Phillips. Can you book my ticket to Washington, DCA to attend the seasonal festivals?

ASSISTANT: Sure, may I know your origin point?

USER: Austin, AUS is my origin point.

ASSISTANT: Could you help me with your journey dates?

USER: Sure. 07/29 is my starting date to travel.

ASSISTANT: Okay.

USER: 06/29 to 07/01 is my travel dates.

ASSISTANT: Okay, give me a second.

USER: Sure.

ASSISTANT: Sorry, currently there are no flights available to your route.

USER: Ok. Thanks for the information.

ASSISTANT: Thank you for opting us.