You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

USER: Kindly please assist me for booking with a direct flight on the name of Emma Adams.

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: Can you please provide your take off and landing airport codes?

USER: I am boarding from Oakland, CA - OAK.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: Landing airport is Las Vegas, NV - LAS.

ASSISTANT: Ok.

USER: My travelling dates are 05/16 to 05/18.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: That's Ok, thanks for your information.

ASSISTANT: Thank you for choosing us.