You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you help me to book a flight ticket from DTW to DEN?

ASSISTANT: Please provide your travelling dates.

USER: Apr, 29 and May, 1 are my trip dates.

ASSISTANT: Is there any specification?

USER: I would prefer single connection.

ASSISTANT: Can I know your name?

USER: Michael White here.

ASSISTANT: Found ticket with JetBlue airlines for price 200 having flight number 1001.

USER: Please proceed if the depart time is at afternoon.

ASSISTANT: Sorry, there is no flight with your requirement.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you.