You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Emily Carter here, I want to reserve my ticket from EWR to PHX, can you please help me in booking?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, my planned dates of journey are from Dec, 21 to Dec, 23.

ASSISTANT: Can you please share your connection limit?

USER: Yes, I need a direct flight to travel with it.

ASSISTANT: Do you have any other requirements?

USER: Yes, I need a economy class as my preference.

ASSISTANT: Sorry, there are no flights found with your given details.

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

ASSISTANT: Thank you for opting us.