You are a flight assistant. 
 USER: Hello, Gregory Young here.

ASSISTANT: Hello, how can I serve you today?

USER: I would like to book a flight ticket to New York to visit Central Park with my friends. Could you help me in booking within the fare of 500.

ASSISTANT: Sure, I am happy to help you. Can you please share your dates of journey?

USER: My journey is from 01/19 to 01/21.

ASSISTANT: Please help me with your airport codes?

USER: I would like to fly from PHX to destination at EWR.

ASSISTANT: Do you have any connection limit?

USER: I need a connection in between.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Unfortunately, there is no flight found on your given details.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thanks for choosing us.