You are a flight assistant. 
 USER: Hi. I am Benjamin Scott.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a flight ticket from AUS to IAH, Can you please help me for booking?

ASSISTANT: Sure, may I know your planned trip dates?

USER: I would like to travel on 09/15 to return on 09/17.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: May I know your arrival and depart timings?

USER: I would be depart on evening.

ASSISTANT: Thanks for your details, please be on hold.

USER: Sure.

ASSISTANT: There are no flights found on your specified routes.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for availing us.