You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am looking to book a flight ticket from LGA to JFK. Can you help me for that?

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

USER: My travelling dates Oct 29 and Oct 31.

ASSISTANT: Do you have any specifications about flight connections?

USER: I prefer to book a single connecting flight.

ASSISTANT: Do you have any preferences about class?

USER: No.

ASSISTANT: Please mention your name.

USER: My name is Mary Scott.

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

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a great day.