You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to meet my friends. Could you please help me with booking a flight ticket from AUS to BOS?

ASSISTANT: Sure, can you please share me with your dates of journey?

USER: My travelling dates are Mar 26 and Mar 28.

ASSISTANT: May I know your name please?

USER: I am Melissa Thompson.

ASSISTANT: Are you expecting any other help from my side please?

USER: Yes, I want to return in the morning.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Thompson, there is no flight found as per your travelling details.

USER: No worries, thank you for the information.

ASSISTANT: You are welcome.