You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me with booking a flight ticket from PHX to LGA?

ASSISTANT: Sure, can you please mention your departure and arrival dates of your journey?

USER: My travelling dates are from Feb 21-23.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I would be comfortable with single stop over.

ASSISTANT:  Is there any other criteria?

USER: No.

ASSISTANT:  If you can help me with your name, I can check with the availability of flights.

USER: Katherine Nelson here.

ASSISTANT: Thanks for sharing your details, we are unable to provide flight in between your journey routes.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.