You are a flight assistant. 
 USER: Hello. Jack Anderson here.

ASSISTANT: Hello, how may I help you today?

USER: I want to attend an emergency surgery in EWR, can you please book a flight ticket from PHL?

ASSISTANT: Sure, may I know your planned trips?

USER: Sure, I want to travel on Dec 8 and intend to return on Dec 10.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a flight with single connection.

ASSISTANT: May I know your arrival and depart timings?

USER: My depart time must be in the afternoon time.

ASSISTANT: Which class do you prefer either economy or business?

USER: I prefer an economy class to travel.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: We found a connecting flight of fare 100 with airline United and number is 1020. Can I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed in economy class and depart time is in the afternoon.

USER: Thank you.

ASSISTANT: Thank you.