You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Pamela Wilson here, I want to reserve my ticket from DCA to ATL, can you please help me?

ASSISTANT: Sure, kindly share your travel dates.

USER: Sure, my respective dates of journey are from Feb, 19 to Feb, 21.

ASSISTANT: Do you any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Is there any other specifications?

USER: Yes, I need a return time at afternoon.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: Ok, that's fine. Anyways, thank you for your service.

ASSISTANT: Thanks for reaching us.