You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I want to book a connecting flight ticket to attend an event from CO. Can you help me?

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

USER: Thank you. Oct 13th and 15th are my travelling dates.

ASSISTANT: Can you share me your nearest airport codes?

USER: DEN and LGA are my airport codes.

ASSISTANT: Do you have any other specifications?

USER: No, I am happy with the intent that I had mentioned above.

ASSISTANT: Give me a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: No issue. Thank you.

ASSISTANT: Can I know your name?

USER: Margaret Walker here.

ASSISTANT: Thank you for reaching us.