You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michelle Young.

ASSISTANT: How can I help you ?

USER: I am planning to visit Denver to meet my friend, can you please help me in booking?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please provide me your travelling dates?

USER: I would like to start my journey on 03/26 and my return will be on 03/28.

ASSISTANT: Ok, may I know your airport codes?

USER: I want to fly from IAH to DEN.

ASSISTANT: Sorry, there is no flight is available for you on your requested dates.

USER: Ensure that my connection should be 1. That's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.