You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I am Joshua Taylor here, I want to reserve my ticket from DCA to PHL, can you please help me?

ASSISTANT: Please can you share your preferable journey dates?

USER: Sure, my planned dates of travel are from 07/25 to 07/27. I need a direct flight.

ASSISTANT: Please wait for a minute.

USER: Sure, I will wait.

ASSISTANT: I am sorry to say that there is no flight found with that connection.

USER: Ok, that's fine.

ASSISTANT: Thank you for reaching us.

USER: Anyways, thank you for your service.