You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Brenda Nelson. I want book a flight to meet my old friends at Orlando, FL - MCO. Can you please help me with book a ticket from Houston, TX - IAH?

ASSISTANT: May I know your travel dates?

USER: Sure, my depart is on 02/18 and arrival is on 02/20.

ASSISTANT: Thank you for providing your details, there is no flight on your route.

USER: OK, no problem.

ASSISTANT: Thank you so much for choosing us.

USER: Thank you.