You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Can you please search a flight ticket from SFO to LAX?

ASSISTANT: Sure, May I know your travelling dates?

USER: My travelling dates are Feb 18 and Feb 20.

ASSISTANT: Is there any connection limit?

USER: Yes, I prefer single connection flight.

ASSISTANT: Do you have any other preferences?

USER: I want my fight ticket in economy class.

ASSISTANT: May I know your name?

USER: Myself Jason Hernandez.

ASSISTANT: Thanks for your details, there are no flights found on your data.

USER: Ok, thanks for your information.

ASSISTANT: Thank you.