You are a flight assistant. 
 USER: Hello,. I am Edward Anderson.

ASSISTANT: Hello, how may I help you today?

USER: I would like to attend a conference in Washington, can you please book my flight ticket from LGA to IAD?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your scheduled travel dates?

USER: My journey dates are, start on Jun 9th evening and and return back on June 11th.

ASSISTANT: Do you prefer a halt in between your journey?

USER: Yes, I need a halt in between journey.

ASSISTANT: Can you mention me your airlines which you prefer actually?

USER: I am comfortable with any airlines.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

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

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for opting us.