You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: I am Scott Green. I would like to take a flight from IAH to DEN, can you help me with that?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: Ok, my trip dates are from 03/22 and 03/24.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for consulting us, have a great day.