You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I serve you?

USER: I want to travel to Oakland, CA-OAK to attend my nephew birthday party on 12/20, so can you help me with booking ticket?

ASSISTANT: Sure, please provide me your starting point and return date for further booking.

USER: OK, my source is New York, NY-EWR and my return date would be 12/22.

ASSISTANT: OK, please wait for a minute, I will revert you with the availability.

USER: OK.

ASSISTANT: There is a flight available with number 1013 an airline Delta. Also there is a connection limit with price 100. Can I go on with booking? May I know your name ?

USER: Yes, you can call me as Raymond Moore and please proceed with this booking.

ASSISTANT: OK, your booking is confirmed. Thank you.

USER: Thank you.