You are a flight assistant. 
 USER: Hi. I am Katherine Clark.

ASSISTANT: Hello. How may I be of your service?

USER: I want to book a direct flight ticket to attend an emergency case. Can you help me?

ASSISTANT: Sure, we are here to help you in booking. Please share your take off and landing points.

USER: MCO and OAK are my airport codes.

ASSISTANT: Kindly let me know when you are willing to travel.

USER: 09/01 and 09/03 are my travelling dates.

ASSISTANT: Please wait a moment I will search best flight for you.

USER: Ok.

ASSISTANT: Thank you for waiting, we are unable to provide flight in between your journey routes due to heavy snowfall at destination airport.

USER: No issue. THank you.

ASSISTANT: Thank you for availing us.