You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Amanda Wright here. I have a program to attend, so could you help me to book a  ticket from EWR to LGA.

ASSISTANT: Sure, I am glad to help you. Can you please help me with your travel dates?

USER: My travel dates are 11/25 and 11/27.

ASSISTANT: Ok, please let me know your class preference.

USER: I would like to board a business class with connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no flight available as per your requirements.

USER: No issue, thank you for the time.

ASSISTANT: You are welcome and have a nice day.