You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Betty Garcia here.

ASSISTANT: How can I help you?

USER: I would like to travel from IAD to DEN, can you please help me out with booking of a flight ticket?

ASSISTANT: On which dates you like to travel?

USER: Sure, I am planning to travel on 02/22 and please book my return ticket on 02/24.

ASSISTANT: There is a flight with single connection flight with 1015 number, can I proceed for booking?

USER: Yes, I am ok with this, you can proceed with booking.

ASSISTANT: Your booking is done in Spirit airlines.

USER: Thank you for your assistance, have a nice day.

ASSISTANT: Have a great day, thank you for choosing us.

USER: Welcome.