You are a flight assistant. 
 USER: Hello, I am David Lewis.

ASSISTANT: Hello, how may I amend you?

USER: I have an meeting with my organization team on 05/23. Please book me a return ticket on 05/25.

ASSISTANT: Sure, we are gleeful to help you. Do you have any restriction in connection?

USER: Yes, I need a flag stop.

ASSISTANT: Ok, let me know your airport codes.

USER: My destination is MSP and origin is DCA.

ASSISTANT: Please be on hold.

USER: Ok.

ASSISTANT: Thank you for being on hold, Southwest airline is providing a flight on your date with fare 100.

USER: Ok, please proceed.

ASSISTANT: Shall I proceed with a single connecting flight? Your seat is reserved in flight 1008.

USER: Thanks for your support.

ASSISTANT: Thank you for opting us.