You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be at your service today?

USER: I want to reserve my ticket within the connecting flight, can you please help me in booking my ticket?

ASSISTANT: Sure, can you please forward your journey dates?

USER: Ok, my planned dates of journey are from Jun, 22 to Jun, 24.

ASSISTANT: Kindly assign your source and destination airport codes?

USER: Ok, my airport codes are from DCA to DTW.

ASSISTANT: May I know your name please?

USER: Sure, my name is Brandon Harris.

ASSISTANT: Are there any more specifications?

USER: Yes, I want to travel in a business class.

ASSISTANT: Sorry to inform you that, we did not find any flights matching your specifications.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Anyways, thank you for your service.