You are a flight assistant. 
 USER: Hello, I am Jerry Williams.

ASSISTANT: Hello, how can I best assist you today?

USER: I would like to surprise my father on his birthday that is on 12/10, so will you help me to book a flight ticket on 12/09 and return flight on 12/11?

ASSISTANT: Sure, we are glad to serve you.

USER: Thanks.

ASSISTANT: Please specify me your airport points?

USER: My source airport is Chicago, IL - ORD. My destination airport is Denver, CO - DEN.

ASSISTANT: Do you need any other specifications?

USER: Yes, I need a connecting flight.

ASSISTANT: Thanks for your details, there is a flight found in Delta airline of flight number 1028 and fare is 100. Shall I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thanks for communicating us.