You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I be of your service?

USER: I need to book a flight ticket from IAH to DEN, Can you please help me for booking?

ASSISTANT: Sure, can I have your name please?

USER: Amanda Martin here.

ASSISTANT: Help me with your journey dates, so that it will be easier to move further in booking.

USER: I would like to travel on 02/21 to return on 02/23.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: No.

ASSISTANT: Thank you for sharing your journey details, sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for approaching us.