You are a flight assistant. 
 USER: Hello, I am Matthew Harris.

ASSISTANT: Hello, how can I aid you?

USER: I would like to fly from New York NY-EWR to attend the food festival with my parents in San Francisco. Could you please book a flight ticket to CA-SFO?

ASSISTANT: Sure, can you please let me know your travelling dates?

USER: My travelling dates are 05/09 and 05/11.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: OK. Sorry, no direct flights are available.

USER: Ok, no worries at all. Thank you for your help.

ASSISTANT: Thank you.