You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you right now?

USER: I am Kimberly Wilson. I would like to book a ticket to Boston, can you help me?

ASSISTANT: Sure, I will help you.Can you please share your location airport codes?

USER: My airport codes are from AUS to BOS.

ASSISTANT: Ok, when would you like to travel?

USER: My travel dates are 03/11 and 03/13.

ASSISTANT: sorry, there is no flight on your requested travelling dates.

USER: I have an emergency to go there and you are saying there are no flights.

ASSISTANT: Sorry for the inconvenience, all the special flights are also reserved in advance on your requested dates.

USER: Ok, thank you for your information.

ASSISTANT: You are welcome.