You are a flight assistant. 
 USER: Hello. I am James Nelson.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to book a flight ticket from Boston which is departing in the afternoon time?

ASSISTANT: Sure, could you please provide your landing airport code?

USER: Thank you. My boarding and landing airport codes are BOS and IAH.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I want to travel on the dates of Nov 29 and Dec 01.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need an economy class flight to travel.

ASSISTANT: Ok, please wait for a moment.

USER: Ok, take your time.

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

USER: It's ok, not a problem with that. Anyways thank you for checking the flight availability.

ASSISTANT: Thank you for choosing us.