You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I best oblige you today?

USER: I would like to book a flight ticket to Chicago, IL-ORD to attend my friends bachelors party, can you help me to book a flight ticket from Denver, CO-DEN?

ASSISTANT: Sure, let me know your travelling dates?

USER: 09/09 and 09/11 are my planned travelling dates.

ASSISTANT: May I know your good name?

USER: I am Jacob Johnson.

ASSISTANT: Thank you for providing your details, there are no flights found with the given details.

USER: No issues, I'll choose any alternative to reach my destination.

ASSISTANT: Thank you.

USER: Thank you for your information.