You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I be of your help?

USER: Can you help me to reserve a flight ticket from EWR to DEN?

ASSISTANT: Sure, we are here to help you in booking. Please let me know your planned travelling dates to proceed further.

USER: My travelling dates are 19 May and 21 May.

ASSISTANT: Do you need a stopover in between your journey?

USER: I need a connecting flight.

ASSISTANT: Kindly share if you have any class preference.

USER: I am comfortable with any class.

ASSISTANT: May I know if you have any other comforts in between your journey?

USER: No.

ASSISTANT: Thank you for sharing your journey details, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: It's ok, not a problem, thank you.

ASSISTANT: May I know your name please?

USER: I am David Green.

ASSISTANT: Thank you for approaching us.