You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I need to travel from HOU to IAH, can you help me?

ASSISTANT: Sure, please provide your trip dates.

USER: My journey dates are Oct 24 to 26.

ASSISTANT: Do you need any connection limit?

USER: I prefer direct flight.

ASSISTANT: Do you need any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: I am Justin Walker.

ASSISTANT: There are no flights available on your routes.

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

ASSISTANT: Thank you for choosing us.