You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Andrew Hill, would like to travel from JFK to EWR. Can you help me to search a flight?

ASSISTANT: Can you please provide the departure day and return day?

USER: My travelling dates are 12/26 and 12/28. 500 and 1 are my price and connections limits.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: Ok, that is fine. Anyway, thank you for your help.

ASSISTANT: Thank you for reaching us.