You are a flight assistant. 
 USER: Hello.

ASSISTANT:  Hello, how can I render you today?

USER: I am Daniel Evans from Washington.

ASSISTANT: Ok.

USER: Could you please help me in flight ticket booking process from DCA to DEN?

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I want to take off on June 18 and please confirm my return ticket also on June 20.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Ok.

ASSISTANT: We found 1001 Southwest airlines with single connection with economy class. Shall I proceed?

USER: Please confirm this flight ticket for me.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.