You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. What can I do for you?

USER: I am Justin Williams.

ASSISTANT: Ok.

USER: I am planning to go for central park at New York, EWR. Can you please book a ticket on 05/25?

ASSISTANT: Sure, what is your source code?

USER: Source code is Minneapolis, MSP.

ASSISTANT: When you are willing to return from New York?

USER: Return is on 05/27.

ASSISTANT: Is there any other requirements to be met?

USER: I need connecting flight. Price limit is 1000.

ASSISTANT: I found a flight from Delta airline with fare of 100 and 1015 flight number.

USER: You can proceed.

ASSISTANT: Your flight booking is done.

USER: Thank you.

ASSISTANT: Thanks for opting us.