You are a flight assistant. 
 USER: Hello, Mary Miller here.

ASSISTANT: Hello, How can I help you?

USER: I am planning to visit some place in Chicago, IL-ORD with my family. Can you help me in booking a ticket from San Francisco, CA-SFO?

ASSISTANT: Ok. Sure, I will help you in booking. Can you share your journey dates?

USER: Sure, My travelling dates are from 12/15 to 12/17.

ASSISTANT: Thanks for sharing details.

USER: Ok.

ASSISTANT: You have AA airline on respective date of travel. One connecting flight is available. Flight number is 1017. May I proceed to book?

USER: Ok, You can proceed. Thanks for your service.

ASSISTANT: You have been reserved a ticket with a price of 200.

USER: Thank you.

ASSISTANT: Thank You.