You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name please?

USER: My name is Kathleen Thomas. I need your help in booking a flight ticket.

ASSISTANT: OK Thomas,how may I help you?

USER: My travelling codes are from MCO to IAH.

ASSISTANT: May I know your travelling dates?

USER: My preferable journey dates are from 07/02 to 07/04.

ASSISTANT: I am sorry Thomas,there is no flight found on your name. Thank you for approaching us.

USER: It's OK. Thank you for your help.