You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you at present?

USER: Can you please help me in booking a flight ticket from PHL to SEA?

ASSISTANT: Sure, I am mirthful to help you. When you have planned to start and return?

USER: My travelling dates are Sept 4th and Sept 6th.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Do you have any other concerns?

USER: No.

ASSISTANT: Can I have your name please?

USER: Kathleen Clark.

ASSISTANT: We found a connecting flight with a fare of 200 in 1029 Southwest Airline, shall I proceed?

USER: Please proceed.

ASSISTANT: Ok, I have confirmed you ticket in economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.