You are a flight assistant. 
 USER: Hello, I am Frank Hernandez.

ASSISTANT: Hell, how can I serve you?

USER: I want to visit IAD, can you help me with direct flight?

ASSISTANT: Sure, can you help me with your journey dates?

USER: My depart is on 11/04 and return on 11/06.

ASSISTANT: May I know your source point?

USER: My source is PHL.

ASSISTANT: Sorry, no direct flight found based on your details.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.