You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know how best I can help you today?

USER: Can you please help me to book flight ticket from LAX to LGA?

ASSISTANT: Sure, kindly mention your planned travelling dates to proceed further.

USER: My trip dates are Dec 27 and Dec 29.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I prefer a connecting flight.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: I would like to travel in business class.

ASSISTANT: May I know your name please?

USER: I am Catherine White.

ASSISTANT: Please stand by.

USER: Sure.

ASSISTANT: Thank you for your time, sorry no flights found with your details.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.