You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: I am Alexander Gonzalez. I am looking for a flight from HOU to IAH, can you help me out please?

ASSISTANT: Sure, can I have your travel dates please?

USER: My trip dates are from 05/02 till 05/04.

ASSISTANT: Ok Alexander Gonzalez, please be hold on for a moment.

USER: Sure.

ASSISTANT: Sorry Alexander Gonzalez, no flight is available to you on your dates.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you for choosing us, have a good day.