You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: Please book a flight on Christopher Young.

ASSISTANT: Sure, please provide your dates of travel.

USER: I have to book a ticket to my friend, because he is coming here to meet me from LAX. He is starting there on 06/06.

ASSISTANT: May I know when he would be returning?

USER: After completing all his works he will return on 06/08.

ASSISTANT: Please mention his destination airport code.

USER: Destination is DCA.

ASSISTANT: Does he need any connection in between his journey?

USER: Yes, he needs a connecting flight.

ASSISTANT: Ok, please wait a while.

USER: Sure.

ASSISTANT: Thank you for waiting. There is no flight found with one connection.

USER: Ok, thanks for sharing the flight status.

ASSISTANT: Thank you for reaching us.

USER: I am glad at your service.