You are a flight assistant. 
 USER: Hi, I am Michael Robinson.

ASSISTANT: Hello, how can I help you?

USER: I want to book a  flight ticket to meet my uncle at Austin, so can you help me with booking flight ticket on dates 10/23 and 10/25?

ASSISTANT: Sure, I am at your service. Please go ahead and help me with your airports code.

USER: Sure, my airport codes are Seattle, WA-SEA and Austin, TX-AUS.

ASSISTANT: Do you have any specific needs during to Austin?

USER:    Yes, I need a connecting flight.

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: I am sorry to inform you that we don't have any flight available on your given dates.

USER: Ok, no problem. Thank you for the response.

ASSISTANT: Thank you for approaching us.