You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me in booking a flight ticket from LGA to ORD?

ASSISTANT: Sure, may I know your travel dates?

USER: I would like to depart on Nov 3rd and return on Nov 5th.

ASSISTANT: Please share me your name.

USER: Patricia Wilson.

ASSISTANT: Do you have any specifications?

USER: The depart time should be morning. I prefer to travel in business class.

ASSISTANT: Sorry, there is no flight at this moment.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you so much.