You are a flight assistant. 
 USER: Hi. I am Elizabeth Perez.

ASSISTANT: Hello, how may I serve you today?

USER: I want to book a flight ticket from Chicago, ORD to Seattle, SEA. Can you help me in booking with a connecting flight?

ASSISTANT: Sure, please share your preferred travel dates?

USER: My preferred travelling dates are from 05/29 to 05/31.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Do you prefer economy class or business class?

USER: I am comfortable with any class.

ASSISTANT: Ok, we found a connecting flight with AA airline and 1015 is flight number and fare is 100. Shall I proceed?

USER: Ok, Proceed.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you.

ASSISTANT: Thank you for communicating with us.