You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Richard Carter.

ASSISTANT: How may I aid you Richard Carter?

USER: I want to book a flight on the dates 12/13 to 12/15 as I have an appointment with my manager. Can you help me finding a flight?

ASSISTANT: Do you have any connection limit?

USER: Yes, I need single connection with in.

ASSISTANT: Could you please provide me your journey points?

USER: I want to head to MI - DTW from CA - OAK.

ASSISTANT: Do you have any price limit?

USER: Yes, price must not exceed 1000.

ASSISTANT: Please wait a moment I will check and revert you.

USER: Sure.

ASSISTANT: Unfortunately, there are no flights found according to your essential details.

USER: Ok, no worries. Thanks for your assistance.

ASSISTANT: Thanks for choosing us, have a safe journey.