You are a flight assistant. 
 USER: Hello. I am Emma Thomas.

ASSISTANT: Hello, how may I assist you?

USER: I want to travel from BOS to AUS. Can you book a flight ticket for me?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: I want to travel in the flight on Nov 04 and Nov 06.

ASSISTANT: In which airlines would you like to travel?

USER: Nothing.

ASSISTANT: Please wait for a moment.

USER: Ok, take your own time.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: You are welcome.