You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to attend a board meeting at OAK. Can you book a flight ticket from LGA?

ASSISTANT: Can you please share your trip dates?

USER: My planned travel dates are Apr, 15 and Apr, 17.

ASSISTANT: Do you prefer any class?

USER: No.

ASSISTANT: May I know your requirements?

USER: My depart time should be at morning and I need to travel in normal cost airlines only.

ASSISTANT: No flights found on your route.

USER: It's ok, not an issue.

ASSISTANT: May I know your name for documentation?

USER: Joseph Phillips here.

ASSISTANT: Thank you.

USER: Welcome.