You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Jonathan Collins.

ASSISTANT: How can I help you?

USER: I am looking for a flight from OAK to MSP, hope you are helping me out.

ASSISTANT: Sure. Can I know your travelling dates?

USER: Ok, my planned dates are from July 07 to 09.

ASSISTANT: Do you have any preferences?

USER: I need a flight with normal-cost.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you.