You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I want to meet my friend, please book my ticket from DCA to EWR.

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: My trip dates are 08/20 and 08/22.

ASSISTANT: Ok, please wait a moment to check flight availability.

USER: Sure.

ASSISTANT: There is a flight in Hawaiian airlines with connections 2, is it ok for you?

USER: I need a connecting flight.

ASSISTANT: Yes, I have found a flight in Delta airlines with connection 1 and price 700, is it ok for you?

USER: I can afford 500 for my ticket.

ASSISTANT: Ok, I will check with that.

USER: Ok.

ASSISTANT: Sorry to inform you that no flight is available to you with fare 500.

USER: It's ok, thank you.

ASSISTANT: May I know your good name please?

USER: My name is Barbara Wilson.

ASSISTANT: Ok, thank you for choosing us.