You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Barbara Hall. Can you help me to book a flight ticket from MCO to EWR?

ASSISTANT: Sure, on which dates you are planning to travel?

USER: Ok, please let me know if you can book for the dates Nov 6th and 8th.

ASSISTANT: Sorry Barbara, on these dates there is no flights available.

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

ASSISTANT: Most welcome.