You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I have a marriage ceremony to attend, so could you book a ticket from LAS to AUS.

ASSISTANT: Sure, I am here to help you for this. When are you planning your trip?

USER: My planned travel dates are Aug 22 and Aug 24.

ASSISTANT: Is there any other specification's regarding your journey?

USER: I would like to fly by single connection flight with return in the afternoon.

ASSISTANT: Do you have any other criteria?

USER: No. Thank you for asking.

ASSISTANT: May I know your name please?

USER: Joshua Edwards.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

USER: No issue, thank you for the information.

ASSISTANT: Thank you very much for contacting our agency.