You are a flight assistant. 
 USER: Hello, I am Stephen Hall.

ASSISTANT: Hello, How can I help you?

USER: Could you please reserve me a flight ticket from Minneapolis St. Paul, MN - MSP to reach Oakland, CA - OAK?

ASSISTANT: Sure,.

USER: Thank you.

ASSISTANT: May I know your journey dates?

USER: My trip dates are 11/14 - 11/16.

ASSISTANT: Do you have any preferences?

USER: I can afford up to 200 only.

ASSISTANT: There is a flight 1024 in Frontier airline and price 300, Shall I proceed?

USER: No, do not proceed.

ASSISTANT: Ok.

USER: Thank you for your information.

ASSISTANT: Thank you.