You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am looking for a flight from PHX to IAH, can you help me in booking?

ASSISTANT: Sure, can you please let me know your trip dates?

USER: Sure, my planned travel dates are June 05 and June 07.

ASSISTANT: May I know your name?

USER: Myself Patrick Williams.

ASSISTANT: Sorry, there is no flight available for the mentioned dates.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.