You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Raymond Smith. I need to book a flight ticket from Las Vegas to meet my parents after a long time. Could you please help me in booking?

ASSISTANT: Sure, can you please help me with your airport codes?

USER: My airport codes are from NV-LAS to TX-IAH.

ASSISTANT: May I know your dates of journey please?

USER: My depart will be on 02/12 and arrival on 02/14.

ASSISTANT: Do you have any specifications?

USER: I need a one stopover.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for your patience, we found a flight with couple of connections. Shall I proceed?

USER: Do not proceed.

ASSISTANT: Ok.

USER: Thank you for your service.

ASSISTANT: Thanks for choosing us.