You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jonathan Lewis.

ASSISTANT: Jonathan Lewis. How can I help you?

USER: I am looking for a flight from PHL to IAD, can you please help me in booking?

ASSISTANT: Sure, can you provide me with the travel dates?

USER: I am planning to start my journey on Nov 15 and return back on Nov 17.

ASSISTANT: Is there any time concern?

USER: I want to return in afternoon.

ASSISTANT: May I know the connection limit?

USER: I need a direct flight.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Are there any airline preferences?

USER: I am fine with any airline.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform that there are no direct flights on your route.

USER: That's ok, thank you for your service.

ASSISTANT: Thank you for reaching us.