You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I need to travel from MCO to PHX, can you help me?

ASSISTANT: Sure, may I know your travel dates?

USER: My travel dates are 02/21 and 02/23.

ASSISTANT: Please share me your name.

USER: I am Helen Green.

ASSISTANT: Sorry, there is no flight at this moment.

USER: That's ok. Thank you.

ASSISTANT: Thank you.