You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Jacob Martinez. I am planning to travel from OAK to LAX.

ASSISTANT: Ok, may I know the airport travel dates of your journey?

USER: My travel dares are 12/21 to 12/23.

ASSISTANT: Ok, the flights are not available with that intents you have provided. Sorry for the inconveniences.

USER: That's ok.

ASSISTANT: Thank you for connecting with our agency.

USER: Thank you.