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

ASSISTANT: Hello, how can I assist you today?

USER: I need to meet my sister on his birthday on 03/09 at DC-DCA.

ASSISTANT: Sure, I am here to help you, may I know your return date?

USER: I intend to return on 03/11.

ASSISTANT: Could you please intimate your source code?

USER: I want to board from TX-IAH.

ASSISTANT: There is a Spirit 1023 airline with fare of 200 which matches your travelling dates.

USER: You can proceed with booking.

ASSISTANT: Your booking has been confirmed on name of Pamela Martin.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.