You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Please help me in booking a flight ticket from AUS to HOU.

ASSISTANT: Sure, please share your journey dates?

USER: Nov, 26 and Nov, 28 are my travel dates.

ASSISTANT: Do you have any specifications?

USER: I need to depart at evening time.

ASSISTANT: Is there any class preference?

USER: No, thanks.

ASSISTANT: May I know your good name?

USER: Pamela Brown here.

ASSISTANT: Sorry, no flights found on your given details.

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

ASSISTANT: Thank you for choosing us.