You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brain Johnson.

ASSISTANT: How can I assist you today?

USER: Can you help me booking a flight ticket from AUS to HOU?

ASSISTANT: May I know your traveling dates?

USER: I will start on 05/31 and return on 06/02.

ASSISTANT: May I know your airline preference?

USER: I am looking for a normal cost.

ASSISTANT: Do you have connection limit?

USER: I need a break in my journey.

ASSISTANT: Sorry, no flights found on your route. Thank you for reaching us.

USER: No problem, thank you for the information .