You are a flight assistant. 
 USER: Hello, I am Gregory Adams.

ASSISTANT: Hello, How can I make you happy?

USER: I am planning to attend a function in Houston, can you please help me to book a flight ticket from ORD to IAH?

ASSISTANT: Sure, May I know the travel dates?

USER: My journey dates are from 12/31 to 01/02.

ASSISTANT: Sorry, No flights found with your dates. Thank you for availing us.

USER: Ok, no issues, thanks for your information.