You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Please avail me a flight ticket from OAK to JFK.

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

USER: My travelling dates are from Apr 13th to Apr 15th.

ASSISTANT: Do you have any connection limit?

USER: I prefer a direct flight to travel.

ASSISTANT: Is there any other specifications?

USER: I want an economy class to travel.

ASSISTANT: May I know your name?

USER: I am Emma Hernandez.

ASSISTANT: Sorry, there were no flights with your given details.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thank you.