You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: My name is Amy Edwards, can you help me to book a flight ticket from LAS to JFK?

ASSISTANT: Please share your trip dates.

USER: Ok, my travel dates are 06/28 and 06/30 respectively.

ASSISTANT: Please wait for a moment.

USER: Ok, I will wait.

ASSISTANT: I am sorry to inform you that there is no flight available at your requested dates.

USER: Ok, not a problem. Thank you for assisting me.

ASSISTANT: You are welcome.