You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Mary Hill here. Do you have any flight from LGA to meet my sister who was working Microsoft company in JFK?

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are 01/09 and 01/11.

ASSISTANT: I am sorry no flights found on your route.

USER: It's ok, thanks for you help and information.

ASSISTANT: Thank you.