You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you at this moment?

USER: Melissa King here, I am looking forward for your aid in booking a flight ticket from Orlando, FL - MCO. Can you succor me?

ASSISTANT: Sure, I am delightful to assist you with the concern.

USER: Ok, pleased to know you can help.

ASSISTANT: May I know your respective destination code?

USER: Ok, my planned destination airport code is AZ - PHX.

ASSISTANT: Ok, can I know your egress and return dates?

USER: Yes, please book my ticket for the date 04/28 and return date is 04/30.

ASSISTANT: Ok, can you please be patient for a moment?

USER: Ok, I will be patient until you respond.

ASSISTANT: As per your desired intents, there are no flights available for that particular date. Sorry for the inconvenience caused.

USER: That's ok, I can understand your situation. Anyways thank you for providing the information.

ASSISTANT: Thank you for availing our service.