You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am Sandra White. Can you please help me in flight ticket booking from EWR to DCA to attend a meeting?

ASSISTANT: Sure, may I know your travel dates?

USER: Thank you and my planned travel dates are 06/21 and arrival back on 06/23.

ASSISTANT: Do you prefer either economy or business class?

USER: I will prefer economy class flight.

ASSISTANT: Ok, thank you for your details. Please wait for while.

USER: It's alright, I can wait for your response.

ASSISTANT: We found a connecting flight of fare 300 with airline UA and number 1019. Can I proceed?

USER: Yes, you can proceed with flight ticket booking.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you for your enormous help in my flight ticket booking.

ASSISTANT: Thank you for choosing us.

USER: Welcome.