You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you help me in booking my flight ticket from HOU to DFW?

ASSISTANT: Sure, please provide your travelling dates.

USER: My trip dates will be Mar 14th to Mar 16th.

ASSISTANT: Ok, Do you have any class preference?

USER: I am ok, with any class.

ASSISTANT: Ok, please let me know your connection limit.

USER: I need a connecting flight.

ASSISTANT: Ok, Is there any other preferences?

USER: No.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, There were no flights found with your given details.

USER: Its ok, thank you.

ASSISTANT: May I know your name for documentation purpose?

USER: I am Scott Allen.

ASSISTANT: Thank you for availing us.