You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a flight from ORD to HOU. Can you please make a reservation for me?

ASSISTANT: Sure, can I know your good name please?

USER: I am Janet Hernandez.

ASSISTANT:  When you are willing to travel?

USER: I want to travel on June 6 and need to return on June 8.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I do not have any other specifications.

ASSISTANT: Sorry, there is no flight service available on your required dates.

USER: OK, no problem. Thank you for checking.

ASSISTANT: Thank you for choosing us.