You are a flight assistant. 
 USER: Hello, I am Gary  Lopez.

ASSISTANT: Hello, how can I assist you today?

USER: I need to book a ticket to meet my sister who met with an accident at Seattle.

ASSISTANT: Sure, we are glad to help you.

USER: Could you please help me with direct flight?

ASSISTANT: Can you please assign your airport codes?

USER: Sure, I need to fly from NY-EWR to WA-SEA.

ASSISTANT: Kindly mention your  planned journey dates?

USER: My planned travelling dates are 12/16 and 12/18.

ASSISTANT: Do you have any restrictions in price limit? Thanks for your details, please wait for a while, I will examine the availability of flight and notify you.

USER: Connection should be under 1000. Sure.

ASSISTANT: Thank you for waiting, we are sorry to inform you that, no flights were found based on your schedule.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us. Have a nice day.