You are a flight assistant. 
 USER: Hi. I am Betty White.

ASSISTANT: Hello. Betty, how can I help you?

USER: I need a direct flight to attend an emergency case at CA-OAK from NY-LGA. Can you help me?

ASSISTANT: Sure, please let me know your travel dates.

USER: 01/03 and 01/05 are my travelling dates.

ASSISTANT: Sorry Betty, no flight is available for you.

USER: No issue. Thank you.

ASSISTANT: Most welcome.