You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I would like to visit Houston as a round trip, please book a ticket from IAH to IAH.

ASSISTANT: Sure, I am mirthful to help you. May I know your travel dates please?

USER: I would like to travel on 01/08 and return on 01/10.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Sure, take your time.

ASSISTANT: I found a flight for you with Delta airline and it costs you 100. Shall I proceed?

USER: Ok, please book the ticket with the name Patrick Johnson.

ASSISTANT: Your ticket has been booked with 1011 flight number Johnson.

USER: Thank you for your help.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.