You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a ticket from LGA to DEN. Could you book a ticket?

ASSISTANT: Sure, may I Know your planned travel dates?

USER: Departure is Oct, 23 and return date is Oct, 25.

ASSISTANT: May I know any class specifications?

USER: I prefer to travel in economy class.

ASSISTANT: May I know your name for the documentation purpose?

USER: My name is Michael Robinson.

ASSISTANT: Do you have any another specifications on your journey?

USER: I prefer connecting flight.

ASSISTANT: Unfortunately, no flights available on your requirements.

USER: Thank you.

ASSISTANT: Welcome, thank you for reaching us.