You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I want to travel to DTW from DFW, can you please book a flight ticket for me?

ASSISTANT: Sure, can I know your preferable journey dates?

USER: I want to travel in Apr from 14th to 16th.

ASSISTANT: May I know your name please?

USER: Robert Perez here.

ASSISTANT: Please give me a moment.

USER: Please make sure that my ticket is reserved in a single connecting flight.

ASSISTANT: Sorry, non of the airlines is providing a flight to your location on your journey dates to book a ticket.

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

ASSISTANT: You are most welcome and have a happy journey.