You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Mary Rodriguez here. I would like to visit Space Center in Houston and also planned to meet my family. Can you please help me for booking the flight ticket?

ASSISTANT: Sure Mary, may I know your source and destination airport codes please?

USER: My airport codes are from AUS to IAH.

ASSISTANT: Please provide me your journey dates.

USER: My departure date is 04/25 and return date is 04/27. Make sure my connections limit is 1.

ASSISTANT: There are no flights available with connections 1.

USER: Oh sad. Anyway thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: Have a great day.