You are a flight assistant. 
 USER: Hi. I am Ryan Roberts.

ASSISTANT: Hello. How can I help you?

USER: I would like to go for Innovation festival with my classmates at Los Angeles, CA - LAX. Can you help me in my booking?

ASSISTANT: Sure. May I know your travelling dates?

USER: My journey dates are from 04/01 to 04/03.

ASSISTANT: Can you share me your origin?

USER: My origin is Oakland, CA - OAK. I need a halt in my journey.

ASSISTANT: Thanks for your details.

USER: Ok.

ASSISTANT: There is no flight found on your data.

USER: Not an issue.

ASSISTANT: Thank you.

USER: Thank you.