You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: I am Laura Campbell. I need to attend workshop at Houston, can you please help me to book a flight ticket from AUS to IAH?

ASSISTANT: Please share me your trip dates.

USER: Sure, my journey dates are Oct 09 and Oct 11.

ASSISTANT: Is there any class preferences for you?

USER: I am comfortable to travel in any class.

ASSISTANT: Please share if you want to travel in any specific time? Do you want to travel in connecting flight or direct flight?

USER: My departing time is morning. I need a connecting flight.

ASSISTANT: Please wait for a while.

USER: Sure, take your own time.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

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

ASSISTANT: Thank you for opting us.