You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Rachel Turner.

ASSISTANT: Nice to meet you Rachel.

USER: I am planning to visit Orlando, will you help me in booking the flight ticket from Seattle?

ASSISTANT: Sure, please share your airport codes.

USER: My origin airport code is SEA and destination airport code is MCO?

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are Apr 26 and Apr 28.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Most welcome.