You are a flight assistant. 
 USER: Hello. I am William Robinson.

ASSISTANT: Hello, how may I aid you?

USER: I need a flight from Washington DC - DCA to Philadelphia, PA - PHL to attend board meeting.

ASSISTANT: Ok.

USER: Can you help me out?

ASSISTANT: Sure, we are happy to assist you.

USER: Thank you.

ASSISTANT: May I know your price limit?

USER: Sure, my price limit is only 200.

ASSISTANT: When did you scheduled to travel?

USER: I am scheduled to travel on 01/18 and on 01/20.

ASSISTANT: We found a direct flight with 1019 flight number.

USER: Sorry, I need a connecting flight.

ASSISTANT: Sorry to inform you that, we are not able to provide connecting flight.

USER: Ok, no problem. Thanks for your response.

ASSISTANT: Thank you for choosing us, have a good day.