You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Charles Collins. I want to book a flight ticket from CA - OAK to FL - MCO, so please help me in booking a flight ticket.

ASSISTANT: Ok, may I know your travelling dates?

USER: I would like to fly on 03/31 and return on 04/02.

ASSISTANT: Sorry, I did not find any flight ticket on your route.

USER: Not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you.