You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I need to go my hometown to see my father, because he is not well. So, can you please book me a ticket to Houston, TX-IAH.

ASSISTANT: Sure, can you please share your connection limit for this journey?

USER: Sure, I need a single connected flight.

ASSISTANT: Kindly assign your planned journey dates?

USER: Sure, I will depart on 02/18 and back on 02/20.

ASSISTANT: May I know, from where you want to book a ticket?

USER: Sure, I am from Houston, TX-HOU.

ASSISTANT: May I know your name please?

USER: Sure, proceed the booking with the name Paul Perez.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your time. There is no flights with your respective dates of travel.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us. Have a good day.