You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Edward Martin.

ASSISTANT: How may I assist you today?

USER: I am planning to visit New York to attend a wedding ceremony, can you please book me a ticket from OAK to LGA?

ASSISTANT: Sure, I can help you with that. May I know your planned travel dates please?

USER: My preferable journey dates are from 03/27 to 03/29.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your own time.

ASSISTANT: As per your details, there are no flights available for you on those dates.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for choosing us.