You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide service to you?

USER: I am Betty Lewis.

ASSISTANT: Ok.

USER: I would like to visit Denver, will you please book me a ticket from LAS to DEN?

ASSISTANT: Sure, may I know your connection limit?

USER: I require a single connection between my journey.

ASSISTANT: Could you please share your preferred dates of journey?

USER: My preferred dates are Feb 27 and Feb 29.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Is there any other specifications?

USER: My depart time in the afternoon and return time should be in the morning.

ASSISTANT: Ok, please wait for  a while.

USER: Sure.

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

USER: Ok, not a problem. Thank you for your information.

ASSISTANT: Thank you for opting us.