You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you?

USER: Can you please book a flight ticket from HOU to IAH?

ASSISTANT: Sure, we are glad to help you. Can you please let me know your travelling dates?

USER: My trip dates are 02/19 and 02/21.

ASSISTANT: Do you have any stopover in between journey?

USER: I am comfortable to travel in a single connecting flight.

ASSISTANT: Is there any other specifications for you?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Kevin Thompson.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for availing us.