You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you for today?

USER: I am Michael Lopez, can you help me to book a flight from OAK to DTW?

ASSISTANT: Yes, I will help you about it. Can you please let me know your dates of journey?

USER: My preferable dates are 08/22 and 08/24.

ASSISTANT: Give me a moment to check the available flights.

USER: Sure, please search a flight with 1 connection limit.

ASSISTANT: Sorry Lopez, there is no flight to your destination on your preferable dates.

USER: That is fine. Thank you for your help.

ASSISTANT: Ok, thank you for choosing our service.