You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please make a reservation from DCA to PHL to attend a event in Philadelphia?

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

USER: My journey dates are on Sept 30th and Oct 2nd.

ASSISTANT: Do you have any limits on number of connections?

USER: No, I prefer a direct flight in my journey.

ASSISTANT: Do you have any another specifications on your journey?

USER: No.

ASSISTANT: May I know your name for the booking process?

USER: My name is George Smith.

ASSISTANT: Sorry, no flights are available on your required dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Welcome, thank you for reaching us.