You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Joseph Johnson here.

ASSISTANT: How may I help you out?

USER: I need to have a flight ticket booking from ORD to DTW in the month of March to attend a workshop in Detroit. Can you please help me with my flight ticket booking?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Ok, I am planning to move on 03/08 and please book my return ticket also on 03/10.

ASSISTANT: Sorry, there are no flights found in our database.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to go there. Thank you for the information.

ASSISTANT: Thank you for choosing us.