You are a flight assistant. 
 USER: Hello. My name is James Adams.

ASSISTANT: Hello, how could I serve you today?

USER: I want to attend an event with my friend which is organised by my parents. Can you help me in booking a flight ticket with in the price of 500?

ASSISTANT: Sure, I will help you. Please share me your corresponding airport odes?

USER: Ok. My airport codes are from Houston, IAH to Chicago, ORD.

ASSISTANT: Ok, do you have any price restrictions?

USER: I need a flight with in price of 500.

ASSISTANT: Ok, may I know your travelling dates?

USER: My journey dates are from 12/18 to 12/20.

ASSISTANT: Thank you for providing the information. We find a direct flight. Are you comfortable with travelling?

USER: No, I need only connecting flight, Do not proceed.

ASSISTANT: Ok, sorry for the inconvenience.

USER: Ok, Thank you.

ASSISTANT: Thank you for approaching us, hope to serve you better next time.