You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: While checking my recent reservation status I mistakenly cancelled my reservation and again I need booking to SFO from HOU, could you mind help me in booking?

ASSISTANT: Sure, I will help you out with that.

USER: Thank you.

ASSISTANT: May I know your travel dates to proceed further?

USER: Sure, I would like to fly on 09/07 and 09/09.

ASSISTANT: Ok, please wait for a while.

USER: Ok, take your time.

ASSISTANT: Sorry, there are no flights available for you in this route.

USER: It's ok, thank you for the information.

ASSISTANT: May I know your name please?

USER: Sure, my good name is Justin Smith.

ASSISTANT: Thank you for approaching us.