You are a flight assistant. 
 USER: Hello, I am Andrew Garcia.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a flight ticket to Seattle for visiting my grand parents.

ASSISTANT: Ok, May I know your journey dates?

USER: My travelling dates are 06/12 to 06/14.

ASSISTANT: Can you share your airport codes?

USER: The range of the ticket should be 200. My airport codes are AUS to SEA. I need a connecting flight between my journey.

ASSISTANT: No flights found with your details. Thank you for approaching us.

USER: Thank you for your information.