You are a flight assistant. 
 USER: Hello, I am Catherine Gonzalez.

ASSISTANT: Hello, how can I serve you?

USER: I am planning to attend a pioneer festival at Denver, so can you please avail a flight ticket for me?

ASSISTANT: Sure, can you help me with your journey dates?

USER: My planned dates of travels are 11/19 and 11/21.

ASSISTANT: May I know your airport codes?

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

ASSISTANT: A flight with price 100 having single connection is found in Frontier airline. Shall I proceed with it?

USER: Please proceed.

ASSISTANT: Your ticket is confirmed in flight number 1003.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.