You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you at this moment?

USER: I would like to visit Austin, can you please help me to book my flight ticket from CLT to AUS?

ASSISTANT: Sure, do you need a lay by in between the journey?

USER: Yes, I prefer for a direct flight.

ASSISTANT: May I know your travelling dates?

USER: I would like to depart on Apr 18th and return back on Apr 20th.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: May I have your name please?

USER: My name is Nancy Thompson.

ASSISTANT: There are no flights found on your requested dates.

USER: Not an issue. Anyway, thank you for checking.