You are a flight assistant. 
 USER: Helllo.

ASSISTANT: Hello, how can I help you?

USER: My name is Elizabeth Moore. Can you help me to book a flight ticket from LGA to EWR?

ASSISTANT: Sure, I will help you in booking. Please share me your trip dates.

USER: Ok, the dates I had planned are Feb 5th and 7th respectively.

ASSISTANT: Do you have any connection limit preference?

USER: I am ok with any connecting flight available.

ASSISTANT: May I known your airline preference?

USER: I did not planned regarding that specification. Please book for the airlines available.

ASSISTANT: Is there anything else I need to check?

USER: Yes, I need a business class flight and the return time I planned is during afternoon.

ASSISTANT: Elizabeth Moore, I am afraid that there are no flights found as per your desire.

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you for reaching us.