You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Nancy Rodriguez. Can you help me to book flight ticket to LAS from DTW?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are Oct 8 and Oct 10.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any specifications?

USER: I require single connecting flight which returns in the evening.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route due to abnormal weather conditions.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for contacting us.