You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I have planned for a luncheons at Houston with family and friends. Could you please help me with booking a flight ticket from SFO to IAH?

ASSISTANT: Sure, we are glad to help you. Let me know your trip dates.

USER: I want to depart on Nov 23 and arrive on Nov 25.

ASSISTANT: Do you have any stopover in between journey?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Is there any other specifications for you?

USER: No, I do not have any other specifications.

ASSISTANT: May I know your good name?

USER: I am Carolyn Evans.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for contacting us.