You are a flight assistant. 
 USER: Hello, I am Nicholas Martin.

ASSISTANT: Hello, how can I render you today?

USER: I need to book a flight ticket under price 200.Could you please help me?

ASSISTANT: Sure, I am here to help you. Could you please help me with your airport codes?

USER: Sure, CA-OAK and IL-ORD are my airport codes of travelling.

ASSISTANT: When you are willing to go?

USER: I would like to board on 01/24.

ASSISTANT: When you are willing to return?

USER: I intend to return on 01/26.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: There is a  AA airline with couple of connections. Are you ok with it?

USER: Do not proceed with booing.

ASSISTANT: Sure, thank you for approaching us.

USER: Thank you for your help.