You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: Samuel Smith here. I am planning for trip, so could you please book a ticket  from LAX to IAH.

ASSISTANT: Sure, we are glad to help you. On which dates would you like me to book the flight?

USER: My travel dates are as follow June 11 and June 13.

ASSISTANT: May I know your connection limit?

USER: I have no preferences.

ASSISTANT: Is there any other specifications for this trip?

USER: No.

ASSISTANT: Thanks for providing details, no flights are available on your journey dates.

USER: No issue. Thank you for the information.

ASSISTANT: Thank you for choosing us.