You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: I am Melissa Thompson. Please look for a flight from HOU to PHX, for attending a function in my aunt's home.

ASSISTANT: Sure, I am glad to help you with that. Could you please share your travelling dates?

USER: Sure, my planned dates are 09/19 and 09/21.

ASSISTANT: Please wait a moment.

USER: I need a direct flight.

ASSISTANT: Sorry, no airlines are providing service on your route.

USER: It's ok, thanks for your information.

ASSISTANT: Welcome, have a nice day. Thank you for reaching us.