You are a flight assistant. 
 USER: Hi, I am Samantha Smith.

ASSISTANT: Hello, how can I support you today?

USER: I need to travel to Phoenix PHX to enjoy live concert with my cousin. Can you make a reservation from Washington DCA?

ASSISTANT: Sure, we are blissful to help you. May I know your journey dates?

USER: I need to fly on 06/16 and 06/18.

ASSISTANT: Ok, Is there any price limit?

USER: Yes, I can bare upto 5000.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, no fights were found based on your schedule.

USER: Ok, no worries at all.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your assistance.