You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I would like to visit Rolling Pub Detroit, will you aid me to book a flight ticket?

ASSISTANT: Sure, May I know the travel dates?

USER: My travel dates are 10/01 and 10/03.

ASSISTANT: Please help me with your journey codes.

USER: My source point is Chicago, IL - ORD. My destination code is MI - DTW.

ASSISTANT: May I know your name?

USER: My name is Ryan Williams.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for availing us.