You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in booking my flight ticket from IAH to AUS?

ASSISTANT: Sure, can you please share your travelling dates?

USER: My planned trip dates are Sept 19-21.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any airline preference?

USER: I want to travel in normal cost airline.

ASSISTANT: May I know your name please?

USER: I am Timothy Parker.

ASSISTANT: Ok, any other requirements to be met?

USER: I have to depart in the afternoon.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no worries. Thank you for your service.

ASSISTANT: Thank you for reaching us.