You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: My name is Samantha Walker.

ASSISTANT: Ok.

USER: I want to attend for my niece's marriage in Seattle, so please book a flight ticket within a price limit of 200.

ASSISTANT: Sure, I am here to help you, may I know your travelling dates?

USER: I will start on 11/05, return on 11/07.

ASSISTANT: Could you please help me with your airport codes?

USER: My source and destination airport codes are CA - LAX, WA - SEA.

ASSISTANT: There is a Hawaiian 1023 airline with fare of 200 which matches your travelling dates. Shall I proceed with booking? Your booking has been confirmed on name of Samantha Walker.

USER: Thank you.

ASSISTANT: Thank you for approaching us.