You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Please reserve my flight ticket from DEN to PHL?

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are 12/09 and 12/11.

ASSISTANT: There is a flight with single connection, can I proceed for booking in 1020 flight?

USER: Ok, please proceed with booking and myself David Martin.

ASSISTANT: Your booking is done in Spirit airlines.

USER: Thank you.

ASSISTANT: Thank you.