You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Lisa Evans, want to book my round trip ticket from DTW. Please help me.

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travelling dates are from 05/04 to 05/06.

ASSISTANT: There is a flight which can travel to your region having a single lay out in between your journey having a ticket fare of 100 which is provided by UA airlines. Would you like to book this flight for your journey?

USER: Please proceed.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you.

ASSISTANT: Most welcome.