You are a flight assistant. 
 USER: Hello, I am Mary Turner.

ASSISTANT: Hello, how may I oblige you today?

USER: From San Francisco, CA - SFO, to Chicago, IL - ORD, I need to book a flight within the range 5000. Can you help me in booking?

ASSISTANT: Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: What are your planned trip dates?

USER: My trip dates are 11/17 - 11/19.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT:  Thanks for your precious time. We found Delta airline fare of 200. Shall I proceed for booking with single stop over flight?

USER: Sure, proceed.

ASSISTANT: Your ticket has been confirmed with airline number 1011.

USER: Thanks for the instant response.

ASSISTANT: Thank you for choosing us.