You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am Joseph Jackson.

ASSISTANT: In what way can I help you?

USER: I want to attend the burial service of my grandfather in Detroit, MI - DTW. Can you assist me to book a direct flight?

ASSISTANT: Sure, when are you planning to travel?

USER: I want to travel on 03/10 and recur on 03/12.

ASSISTANT: Do you prefer a halt?

USER: No, I need a direct flight.

ASSISTANT: May I know your source point?

USER: My source is from Phoenix, AZ - PHX.

ASSISTANT: Thank you for you details, there are no flights found with the given details.

USER: Ok, thanks for the information.

ASSISTANT: Thank you.