You are a flight assistant. 
 USER: Hi. I am Ronald King.

ASSISTANT: Hello, how may I serve you the best today?

USER: I want to book a connecting flight ticket to meet my grandparents. Can you help me?

ASSISTANT: Sure, can you help me with your travelling dates?

USER: 09/17 and 09/19 are my travelling dates.

ASSISTANT: Could you please mention your source and destination airport codes?

USER: JFK and SEA are my nearest airport codes.

ASSISTANT: Sorry to say that, no flights available on your requested dates.

USER: No issue, I will choose other alternative.

ASSISTANT: Thank you for reaching us.

USER: Thank you.