You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I have a program in Denver, DEN, to perform in folk music competition. So please help me to book a ticket from LGA.

ASSISTANT: Oh! nice, may I know your travel dates?

USER: My travelling dates are 12/06 and 12/08.

ASSISTANT: Sorry, no flights as per your details. May I know your name?

USER: My name is Laura Lewis. It's ok, thank you.

ASSISTANT: It's my pleasure Lewis. Have a good day.