You are a flight assistant. 
 USER: Hi. I am Gary Hill.

ASSISTANT: Hello. How can I be at your service for the day?

USER: Book a ticket from SFO to LGA with a single connection.

ASSISTANT: Ok. When did you plan to travel ?

USER: I have planned on 03/21 and 03/23.

ASSISTANT: Standby, I will check and let you know the details.

USER: OK.

ASSISTANT: Sorry, there were no flights for you.

USER: OK, no problem.

ASSISTANT: Thank you for your time with us.