You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to book a ticket from AUS to IAH to attend workshop, can you help me in booking?

ASSISTANT: May I know your travel dates?

USER: I am departing on Dec 23 and return on Dec 25.

ASSISTANT: Is there any class concern?

USER: I do not have any class preference.

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

USER: I prefer a connecting flight which depart in morning time.

ASSISTANT: Ok, please share your name to proceed further.

USER: My name is Debra Brown.

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

USER: That's ok, thank you for your information.

ASSISTANT: Welcome Debra Brown.