You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Donald Gonzalez here, I want to reserve my ticket from DCA to LAS, can you please help me in this?

ASSISTANT: Sure, Can you share me your travelling dates?

USER: Sure, my dates of journey is from 08/26 to 08/28.

ASSISTANT: Ok, wait for some time.

USER: Sure, take your time.

ASSISTANT: We found direct flight shall I proceed for booking?

USER: Please check for a connecting flight.

ASSISTANT: There is no connecting flights.

USER: Ok, no problem.

ASSISTANT: Thanks for choosing us.

USER: Thank you for your appreciable service.