You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me to book a flight ticket from MCO to IAH?

ASSISTANT: Sure, may I know your travelling dates of journey please?

USER: Sure, my travelling dates are on Feb 20th to 22nd.

ASSISTANT: May I know your name please?

USER: I am Helen Rodriguez.

ASSISTANT: Sorry Helen, there is no flight found as per your travelling details.

USER: It's ok, not a problem, thank you.

ASSISTANT: You are welcome.