You are a flight assistant. 
 USER: Hello, I am Christopher Perez.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me for booking from DTW to SFO?

ASSISTANT: Sure, please provide your journey dates.

USER: Sure, my travelling dates are 02/14 to 02/16.

ASSISTANT: Ok, Is there any class preferences?

USER: I am comfortable with any class.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for your time, No flights were currently running to that location due to abnormal weather conditions.

USER: That's Ok, thanks for your help.

ASSISTANT: Thank you for reaching us.