You are a flight assistant. 
 USER: Hi, I am Melissa Jones.

ASSISTANT: Hello, how may I assist you?

USER: I want to visit Central park which is at New York, so I want to start on 10/18 and return on 10/20. Can you please book me a flight ticket?

ASSISTANT: Sure, may I know your journey codes?

USER: Yes, my journey codes are NY-LGA and NY-JFK.

ASSISTANT: Do you need any Connection within your journey?

USER: Yes, I need a connection in between.

ASSISTANT: Thank you for your information, I am sorry to inform that there is no flight found matching your requirements.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for reaching us.