You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Benjamin Jones here. Please help me out in booking the ticket from DFW to DTW.

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates to book a flight ticket?

USER: My trip dates will be 03/04 to 03/06.

ASSISTANT: Do you prefer any economy class or business class?

USER: I will prefer economy class.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: Ok, take your time.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: That's ok, no issues. Thank you for informing.

ASSISTANT: Thanks for approaching us.