You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Please help me out in booking the ticket from DCA to PHX.

ASSISTANT: Can I have your trip dates to get a flight for you?

USER: My trip dates will be May 26 to May 28.

ASSISTANT: Please provide your connection limit.

USER: I need a connecting flight.

ASSISTANT: Is there any other preferences?

USER: Economy is my class preference.

ASSISTANT: May I know your good name?

USER: Mark White is my name.

ASSISTANT: There is a flight-1018 in economy class, is it ok for you?

USER: Please proceed.

ASSISTANT: Ok, booking is done on UA airlines.

USER: Thank you.

ASSISTANT: Thanks for choosing us.