You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I want to reserve my ticket from DCA to ORD, can you please help me in this?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: Sure, my planned dates of journey are from Apr, 24 to Apr, 26.

ASSISTANT: Do you have any other requirements to be met?

USER: Yes, I want to fly in a connecting flight.

ASSISTANT: Can I have your name please?

USER: Sure, my name is Betty Green.

ASSISTANT: Delta airlines providing a connected flight in economy class.

USER: Ok, you can book it.

ASSISTANT: Your booking is done.

USER: Thank you for your service in booking my ticket.

ASSISTANT: Thank you.