You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to meet my cousin at Houston, please help me in booking a ticket from PHX to IAH.

ASSISTANT: Sure, I will help you. Can you please share me your travelling dates?

USER: My planned trip dates are on Mar 31 and Apr 2.

ASSISTANT: Ok, please mention your name.

USER: My name is Katherine Young.

ASSISTANT: Ok, do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Sorry, no flights are available on your route.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Welcome, have a nice day.