You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Can you help me book a connecting flight from IAD to visit walker art centre at Minneapolis & St. Paul?

ASSISTANT: Sure, Do you have price limit?

USER: 200 is my price limit.

ASSISTANT: Can I know your name?

USER: My name is Mark Lee. I will depart on 05/26 and return on 05/28.

ASSISTANT: Please share your destination airport code.

USER: My destination is MSP.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thanks for being waiting. We found a Delta airline,flight number:1001 and the price is 100.

USER: Book my ticket with this airline.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.