You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I would like to book a ticket from ORD to AUS to attend a conference meet.

ASSISTANT: Sure, May I know the journey dates?

USER: My travels dates are as follows Dec 28 and Dec 30.

ASSISTANT: Do you have any connection limit?

USER: I would like to board a single connection with normal cost.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Anna Hill.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: No issue, thank you.

ASSISTANT: Thank you for availing us.