You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Dennis Young. I am looking for a flight from DEN to PHL, can you help me out?

ASSISTANT:  Sure, I will help you. Please send your travelling dates.

USER: My trip dates are from Apr 19th till Apr 21st.

ASSISTANT: Do you have any airline preferences?

USER: I am ok with any airlines.

ASSISTANT: There is a connecting flight-1006 on Spirit airlines, shall I confirm it?

USER: Please proceed with it.

ASSISTANT: Ok, booking is done.

USER: Thank you.

ASSISTANT: Thanks for choosing us.