You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Myself Stephanie Baker, can you help me with booking ticket from LGA to AUS?

ASSISTANT: May I know your desired travel dates please?

USER: Ok, my trip dates are from 06/23 and 06/25.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for opting us.