You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I would like to visit Washington, please help me in booking a ticket from PHL to IAD.

ASSISTANT: Sure, I am here to help you. Can you please share your travel dates?

USER: My planned journey dates are on June 21 and June 23.

ASSISTANT: May I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Do you have any other requirements?

USER: I would like to depart in the afternoon.

ASSISTANT: Ok, please let me know your name to proceed further.

USER: My name is Anna Garcia.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us.