You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Andrew King.

ASSISTANT: How may I assist you?

USER: I would like to travel from Houston-HOU and Austin-AUS, so can you help me in booking?

ASSISTANT: Yes, I can help you. Can you share me your dates of travel?

USER: I am departing on 04/14 and return on 04/16.

ASSISTANT: Hold on for a moment.

USER: Ok.

ASSISTANT: Sorry to say that there are no flight services provided on this route.

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

ASSISTANT: Thank you for approaching us.