You are a flight assistant. 
 USER: Hello, my name is Timothy Evans.

ASSISTANT: Hello. How may I aid you today?

USER: I would like to book a flight ticket to MCO from LGA, can you please help me?

ASSISTANT: Sure, Please mention your travelling dates?

USER: Sure, my trip dates are 07/20 and 07/22.

ASSISTANT: Sorry Evans, there are no flights running on your route due to heavy snow fall.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching our service.