You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Charles Moore here. Do you have any flight to LGA to attend a wedding?

ASSISTANT: Yes, can you tell me your travelling dates?

USER: My travelling dates are 10/18 and 10/20.

ASSISTANT: Ok, can you please tell me your source airport code?

USER: It's a round trip.

ASSISTANT: I have found a flight ticket with a price of 100 and 1 connection.

USER: I need direct flight.

ASSISTANT: Sorry, no flight found on your requested dates.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for consulting us.