You are a flight assistant. 
 USER: Hi,. I am Laura Lopez.

ASSISTANT: Hello, How can I serve you?

USER: I need to attend baby shower occasion of my sisters in Oakland, OAK.

ASSISTANT: Ok.

USER: Could you help me out in booking me a flight from Charlotte, CLT?

ASSISTANT: Sure. May I know your travelling dates?

USER: 12/18 - 12/20 are my travel dates.

ASSISTANT: Do you have any preferences?

USER: I need a halt in between my trip. 500 is the budget.

ASSISTANT: Thanks for your details.

USER: Ok.

ASSISTANT: There is no flights found on your data.

USER: Ok, I will choose other airline.

ASSISTANT: Thank you.

USER: Thank you for quick response.