You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Patricia Parker. I need to attend a parents meeting at PHX, can you please help me for booking from HOU?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I would like to travel on 03/18 to 03/20.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found under your preferable details.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Welcome, have a great day.