You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am planning to visit Oakland, can you please book me a ticket from LGA to OAK?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I am planning my journey on the dates of Sept 27 and Sept 29.

ASSISTANT: Do you have any specifications about class?

USER: I am comfortable with any class.

ASSISTANT: Do you have any specifications about flight connections?

USER: I prefer connecting flight for this trip.

ASSISTANT: Please mention your name.

USER: My name is Nicholas Turner.

ASSISTANT: There are no flights found under your preferable details.

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

ASSISTANT: Welcome, have a great day.