You are a flight assistant. 
 USER: Hello, I am Linda Taylor.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to travel from SEA to DEN. Can you please help me to book a ticket?

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

USER: I want to depart on Mar 18 and return on Mar 20.

ASSISTANT: Do you have any airline preference?

USER:  I would like to prefer normal cost airlines.

ASSISTANT: Do you want connecting flight?

USER: I need a connecting flight.

ASSISTANT: Can you please share your depart and return times?

USER: I want to return in the afternoon.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.