You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I planned to meet my friend in HOU, can you please help me to book a flight ticket from IAH?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: I prefer to travel on Nov 10 and Nov 12.

ASSISTANT: Do you need break in between your journey?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Please let me know if you have any other specifications.

USER: I want to travel in business class.

ASSISTANT: Can I have your good name please?

USER: I am Christine Miller.

ASSISTANT: Sorry, there are no flights available for you on those dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.