You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Angela Collins.

ASSISTANT: How can I help you?

USER: I am planning to attend my friend's marriage party on 11/05 at Washington. Could you please help me with booking a flight ticket?

ASSISTANT: Could you please provide your travelling dates?

USER: Sure, it's from 11/05 to 11/07.

ASSISTANT: Could you please provide your airport codes?

USER: I would like to travel from LGA to DCA. I am looking for a direct flight, please look for only 0 connection flights.

ASSISTANT: Sorry, there is no direct flight.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you so much.

ASSISTANT: Have a great day.