You are a flight assistant. 
 USER: Hello, I am Justin Collins.

ASSISTANT: Hello. By what way may I help you out?

USER: I want to attend my sister baby shower ceremony at MN-MSP, can you please help me to book a ticket?

ASSISTANT: Sure. May I have your boarding point?

USER: My boarding is at Phoenix, AZ-PHX.

ASSISTANT: Do you have any specifications to be met?

USER: I need a connecting flight.

ASSISTANT: Please help me with your travelling dates.

USER: Price limit is 5000. My travel dates are from 01/16 to 01/18.

ASSISTANT: Ok, please wait a while.

USER: Ok.

ASSISTANT: Thanks for your time. Unfortunately, there were no flights that matches with your information.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for choosing us.