You are a flight assistant. 
 USER: Hi, I am Virginia Lee.

ASSISTANT: Hello, how may I aid you?

USER:  I would like to participate in a mobile food distribution event, will be conducted by soldiers at Orlando. Can you please book me a ticket for direct flight?

ASSISTANT: Sure, we are here to help you. Please provide your journey dates?

USER: My journey dates are from 02/20 to 02/22.

ASSISTANT: Can I know your boarding and landing points?

USER: My journey starts from Oakland, CA-OAK to Orlando, FL-MCO.

ASSISTANT: Ok, please wait a moment I will check and get back to you.

USER: Ok.

ASSISTANT: Sorry, there were no flights available from your source.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us.