You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I want to celebrate Christmas with my family at New York, can you please book me a ticket with single connection?

ASSISTANT: Sure, may I know your source and destination codes?

USER: My destination is New York, NY-LGA. My source is Austin, TX-AUS.

ASSISTANT: Could you please provide me your journey dates?

USER: My journey dates are from 12/25 to 12/27.

ASSISTANT: May I know your good name?

USER: I am Barbara Evans.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.