You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: I am Jennifer Hernandez here, I want to reserve my ticket from DEN to DCA, can you please help me?

ASSISTANT: Sure, May I know the journey dates?

USER: Sure, my planned dates of journey are from Sep, 02 to Sep, 04.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: Please wait a minute.

USER: Sure, I will wait.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for availing us.