You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Raymond Hernandez.

ASSISTANT: How can I aid you?

USER: Can you assist me to book a flight ticket from AUS to BOS to meet my wife in that city?

ASSISTANT: Sure, may I your travelling dates?

USER: I am planning to travel on 04/17 and back on 04/19.

ASSISTANT: Give me a minute, I will check with the availability.

USER: Sure.

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

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us.