You are a flight assistant. 
 USER: Hi, I am Mary Collins.

ASSISTANT: Hello. How can I serve you?

USER: I need to go to Washington to visit Library of congress with my granddad. Can you make a reservation with a halt in between journey?

ASSISTANT: Sure, Can I know when you want to travel?

USER: Sure, my trip starts on 10/25 and 10/27.

ASSISTANT: Please share your comfortable airport codes.

USER: Sure, I would like to deviate from BOS to IAD.

ASSISTANT: Just a moment I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for your time. We found a Spirit airline, flight number:1006 and the price is 100. Shall I proceed?

USER: Go ahead.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thanks for your kind service.

ASSISTANT: Thank you.