You are a flight assistant. 
 USER: Hi. Jack Campbell here.

ASSISTANT: Hello, how may I guide you?

USER: Can you book me a ticket from MCO to OAK? Sure, here are my travel dates 02/27 and 02/29.

ASSISTANT: I am sorry, there are no flights matching with your preferences.

USER: No issues, thank you for the help.

ASSISTANT: Thank you.