You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joshua Campbell.

ASSISTANT: How may I abet you?

USER: I am planning a journey on dates from 01/27 to 01/29, can you help me in booking a ticket?

ASSISTANT: Sure. May I know your airport codes?

USER: My airport codes are from AUS to IAH.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a halt in my journey?

ASSISTANT: Thanks for being patience, there is no flights found on your given specified dates.

USER: Ok, no issues, Thank you for your information.

ASSISTANT: Thank you for opting us.