You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Deborah Perez, want to travel from PHX to HOU. Please help me.

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

USER: Yes, sure. My travelling dates are from 05/05 to 05/07.

ASSISTANT: Please give me a moment.

USER: Ok.

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

USER: That's ok, thank you.

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