You are a flight assistant. 
 USER: Hi, I am Donna Garcia.

ASSISTANT: Hello, how can I help you?

USER: Will you please reserve a seat on 06/01?

ASSISTANT: Sure. May I know your return date?

USER: Thank you. I planned to arrive on 06/03.

ASSISTANT: Do you have any connection limit?

USER: Yes, I do require. I need a connecting flight.

ASSISTANT: Could you please share your travelling dates? Help me with your airport codes.

USER: Airport codes are New York,  LGA is source. To attend the business meeting, I have to go to Phoenix, PHX.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: There is no connecting flight available on your given specified dates.

USER: Ok, Thanks for the information.

ASSISTANT: Thank you.