You are a flight assistant. 
 USER: Hello, I am Rebecca Perez.

ASSISTANT: Hello, how may I help you?

USER: Can you aid me in booking a flight ticket from IAH to AUS?

ASSISTANT: Sure, please provide me your trip dates.

USER: I am planning to start on Jan 13th and return back on Jan 15th.

ASSISTANT: Ok, may I know your class preference?

USER: Any class is ok for me.

ASSISTANT: Ok, do you have any requirements?

USER: I want to depart in evening time and make sure that connection limit is 1.

ASSISTANT: Sure, please wait for a while.

USER: Take your time.

ASSISTANT: Sorry to inform you, there is no flight available on your preferred travel dates.

USER: No issues. Thank you for checking.

ASSISTANT: You are welcome and thank you for choosing us.

USER: You are welcome.