You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Please help me out in booking the ticket from IAH to HOU.

ASSISTANT: May I know your travelling dates?

USER: My trip dates will be Dec 29 to Dec 31.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your name please?

USER: Frank Perez is my name.

ASSISTANT: I am sorry no flights found on your route.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.