You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Catherine Collins here.

ASSISTANT: How may I aid you today?

USER: I want to attend a Marriage in Houston. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable travelling dates?

USER: My travelling dates are Dec 11 and Dec 13.

ASSISTANT: Ok, may I know your regional airports for booking?

USER: My airport codes are LAX and IAH.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Is there any specific timings in your departure and arrival?

USER: I want to return on evening.

ASSISTANT: Any connection limit do you have?

USER: I need single connecting flight.

ASSISTANT: Please be on hold to check the flights.

USER: Ok.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us, have a great day.