You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I am Linda Anderson, want to travel from DFW to BOS. Please help me in booking my ticket.

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: Let me know your connection limit.

USER: I need a connecting flight.

ASSISTANT: In which class would you like me to book your flight ticket?

USER: I am ok with any of the class.

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

USER: My travelling dates are from 10/14 to 10/16.

ASSISTANT: Do you have any other requirements?

USER: My departing time should be in the evening.

ASSISTANT:  Ok, please wait a moment, let me search a flight for you.

USER: Sure.

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

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for choosing us.