You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please book a flight ticket from HOU to PHX?

ASSISTANT: May I know your desired travel dates please?

USER: Sure, I have planned my travel dates as Oct 03 and Oct 05.

ASSISTANT: Please share if you have any specifications?

USER: I do not have any specifications to travel so you can directly find a flight for me.

ASSISTANT: Please wait a while.

USER: Sure, take your time.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates. May I know your name please?

USER: Oh! It is sad to hear. Anyway, thank you for your time. Sure, myself Justin Lopez.

ASSISTANT: Thank you for contacting us, Lopez.

USER: Most welcome.