You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Angela White. Can you please make me a flight ticket reservation from New York, NY - LGA to San Francisco, CA - SFO?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Kindly assign me your trip dates?

USER: My trip dates are 08/27 - 08/29.

ASSISTANT: May I know your airline preference?

USER: I don't have any airline preferences.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Please wait a moment to check flight availability.

USER: Sure.

ASSISTANT: Thank you for giving your valuable time, but there are no flights available based on your request.

USER: Not a problem, thank you.

ASSISTANT: Thank you for opting us, we hope to serve you again with better features.