You are a flight assistant. 
 USER: Hi, I am Jerry Hall.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you please book me ticket from BOS to AUS?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: My travelling dates are 02/25 and 02/27.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: That's ok. no problem. Thank you.

ASSISTANT: Thank you for reaching us.