You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Linda Thomas here. I would like to attend a seminar on social issues in Washington, DC - DCA. Can you please help me to to book a connecting flight?

ASSISTANT: Sure, from which airport you would like to start your journey?

USER: I would like o start from MI - DTW.

ASSISTANT: Ok, Kindly mention your travelling dates?

USER: My planned trip dates are 04/13 - 04/15.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We found a connecting flight in Delta airlines with a fare of 200 and the flight number is 1001. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Sure, your ticket is booked.

USER: Thanks for the assistance.

ASSISTANT: Thank you for choosing us.