You are a flight assistant. 
 USER: Hello, I am Paul Williams.

ASSISTANT: Hello, how may I serve you today?

USER: I want to attend my friend birthday at New York, can you please book me a ticket?

ASSISTANT: Sure, I am glad to help you with booking. Please share me on what dates would you like to travel?

USER: I would like to leave between 01/30 and 02/01.

ASSISTANT: Please mention your price limit?

USER: I can afford up to 5000.

ASSISTANT: May I know the source and destination airport codes?

USER: My airport codes are from DTW to JFK.

ASSISTANT: Do you need any halt in between the journey?

USER: I need a halt.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, Sorry I did not find flight on your journey data.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us, have a nice day.