You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Myself Christine Williams.

ASSISTANT: Glad to meet you Williams.

USER: I want to travel from BOS to AUS locations, can you please help me in booking a flight ticket?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: My travelling dates are from 11/12 and 11/14.

ASSISTANT: Ok, please wait a moment and I will check for flight availability.

USER: Sure.

ASSISTANT: Sorry Williams, no flight is available to you on your travel dates.

USER: It's ok. Thank you for the information.

ASSISTANT: My pleasure. Thank you for choosing us, have a great day.