You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How shall I assist you?

USER: I am Anna Gonzalez, I need your assistance in booking my flight ticket to Denver, CO - DEN?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Please provide price limit?

USER: My price limit is 500 that I can spend only.

ASSISTANT: Please provide connections limit?

USER: I need one connection in between my journey.

ASSISTANT: Ok. May I know your boarding airport code?

USER: Sure, Philadelphia, PA - PHL is my nearest airport so, I want to board from there.

ASSISTANT: Please provide me departure date.

USER: Ok, I want to depart on 05/26.

ASSISTANT: Also, provide your return date.

USER: Ok, I wish to return on 05/28.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no connecting flight.

USER: Ok, That's not a problem. I will try next time.

ASSISTANT: Sure.

USER: Thanks for your kind response.

ASSISTANT: Have a great day!.