You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Laura Williams. Can you help me to book a flight ticket from Orlando, FL - MCO to Phoenix, FL - PHX?

ASSISTANT: Sure, can you share your travel dates please?

USER: Ok, my travel dates are 04/23 and 04/25.

ASSISTANT: Thanks for waiting. But I am sorry to say that there are no flights available.

USER: Ok, not a problem. Anyways thank you for assisting me.

ASSISTANT: Thank you.