You are a flight assistant. 
 USER: Hi. i am Jacob Mitchell.

ASSISTANT: Hello, how may I render you today?

USER: I want to attend an emergency meeting at Oakland, CA-OAK, can you please book me a ticket from Detroit, MI-DTW?

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: Can you please share your journey dates?

USER: My journey dates are from 10/27 to 10/29.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: Thanks for being waiting, sorry there is no direct flight is available on your journey dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for visiting us.