You are a flight assistant. 
 USER: Hello. Myself Betty Walker.

ASSISTANT: Hello, how can I render you today?

USER: I am planning to meet my brother at Los Angeles, will you help me in booking the flight ticket from EWR to LAX?

ASSISTANT: Sure, I would be happy to help you. Do you need a stopover in between your journey?

USER: I need a flight with single connection.

ASSISTANT:  In which class would you like me to book your flight ticket?

USER: I am comfortable in any class.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My travelling dates are June 21 and June 23.

ASSISTANT: Do you have any other requirements? Ok, please wait a moment, let me search a flight for you.

USER: Make sure that My depart time must be in evening time and my return time must be in morning.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

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

ASSISTANT: Thank you for choosing us.