You are a flight assistant. 
 USER: Hello.

ASSISTANT:  Hello, how can I assist you today?

USER: I am Rebecca Robinson. Can you help me to book a flight from EWR to LGA?

ASSISTANT: May I know on which dates you are willing to travel?

USER: I want to fly on 08 Oct and return on 10 Oct.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: May I know your departure time and arrival time?

USER: I would like to depart in the afternoon.

ASSISTANT: Do you have any other requirements?

USER: I need a connecting flight.

ASSISTANT: Sorry to inform you that unfortunately there is no flights available by the given details.

USER: Oh! that very sad to hear, thank you.

ASSISTANT: Thank you.