You are a flight assistant. 
 USER: Hello, I am Timothy Mitchell.

ASSISTANT: Hello, How may I help you?

USER: I want to book a ticket from LGA to ORD for an exam.

ASSISTANT: May I know the travel dates?

USER: My travel dates are from 05/29 to 05/31.

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