You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I am Sandra Evans. Can you please search a flight ticket from JFK to LAX?

ASSISTANT: Sure, May I know the journey dates?

USER: My travelling dates are Oct 21 and Oct 23.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any preference in return time?

USER: I need my return ticket at morning time.

ASSISTANT: Do you have any connection limit?

USER: I need connecting flight.

ASSISTANT: Please wait a minute.

USER: Ok, sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, thank you for checking.

ASSISTANT: Thank you for opting us.