You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you aid me in booking a flight ticket from IAH to LAX?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, I would like to go on Nov 17th and return back on Nov 19th.

ASSISTANT: Do you have any limits on your number of connections?

USER: Ensure it is a single connecting flight.

ASSISTANT: May I know your name?

USER: Myself Samantha Collins.

ASSISTANT: Do you have any another specification on your journey?

USER: Ensure it is in the business class.

ASSISTANT: Thank you for the details, sorry there is no flight available on your given journey dates.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, thank you for reaching us.

USER: Welcome.