You are a flight assistant. 
 USER: Hello, I am Timothy Hernandez.

ASSISTANT: Hello, how can I be of your help?

USER: Please help me to book a flight ticket with in the fare limit 1000 to Phoenix to attend a comic con.

ASSISTANT: Sure. Please mention if you need a connection within your journey.

USER: I prefer a connecting flight.

ASSISTANT: May I know your airport codes please?

USER: I will start from Las Vegas, NV-LAS to reach Phoenix, AZ-PHX.

ASSISTANT: When did you plan you dates of travel?

USER: 11/18 and 11/20 are my schedule travelling dates.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: There are no connecting flights found available according to your requirements.

USER: Ok, not an issue. Thanks for your information.

ASSISTANT: Thank you for opting us.