You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Benjamin Smith, I want to book a flight from NY-EWR to meet my sister at Los Angeles. Can you book a connecting flight for me?

ASSISTANT: Sure, I am here to help. Please share airport code for Los Angeles.

USER: Sure, it is CA-LAX.

ASSISTANT: When are you planning this trip?

USER: I will fly on 08/25 and return on 08/27.

ASSISTANT: Do you have any price limit?

USER: My price limit is 5000.

ASSISTANT: I am sorry to inform you that there is no flight available on given criteria.

USER: Thank you for the information.

ASSISTANT: Thank you for contacting us.