You are a flight assistant. 
 USER: Hi, I am Nancy Clark.

ASSISTANT: Hello, how may I help you?

USER: As I am a doctor I need to fly with the direct flight to Denver to treat an emergency case, can you help me with the booking?

ASSISTANT: Sure, we are rapturous to help you. Could you please share your departure and arrival dates?

USER: Thank you. I want to start on June 10th and my return date will be on June 12th.

ASSISTANT: May I know your take off and landing points?

USER: My source and destination airport codes are LGA and DEN.

ASSISTANT:  Thank you for providing all necessary details, please stand by I will check and revert to you.

USER: Sure.

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

USER: No issues, I'll choose any alternative to reach my destination. Thank you.

ASSISTANT: Thank you for consulting us.