You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help full to you?

USER: Robert Campbell here. I need to visit Detroit to spend my vacation holidays with my friends so please help me to get flight ticket.

ASSISTANT: That's nice, I am happy to help you.

USER: Thank you.

ASSISTANT: May I know your source and destination airport location codes?

USER: Sure, I would like to travel from OAK to DTW.

ASSISTANT: May I know your departure and arrival journey dates?

USER: Sure, I have planned my travel dates as 07/21 and 07/23.

ASSISTANT: Thank you for your information.

USER: It's ok.

ASSISTANT: As per your information, there is a flight available in UA airlines with a connecting flight 1 and the fare is 100. Do you want me to proceed?

USER: It suits to me so please proceed with booking.

ASSISTANT: Ok Robert, you ticket booking is done in 1008 flight in economy class.

USER: Thank you for your help.

ASSISTANT: Enjoy your flight trip. Have a nice day.