You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: My name is Jason Thomas, can you help me to book a flight ticket from MCO to PHL?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: Ok, please can you book for the dates Mar 21 and 23 respectively.

ASSISTANT: Do you have any requirement?

USER: Ok, please book a direct flight and the return flight time is during afternoon please check.

ASSISTANT: Sorry  Jason Thomas, there is no flight in your route.

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you for reaching us.