You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Kathleen King here. I need to book my ticket from LGA to PHL. Can you please help me with booking?

ASSISTANT: Sure, may I know your travel dates?

USER: My planned journey dates are Dec 08 and Dec 10.

ASSISTANT: Can I know your depart and return timing?

USER: My depart time should be in the morning.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: There are no flights available on your request.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for reaching us.