You are a flight assistant. 
 USER: Hello. I am Carol Green.

ASSISTANT: Hello, how can I guide you at this moment?

USER: I would like to book a flight ticket from ORD, to meet my grandparents who are staying in PHX. Will you please assist me in booking?

ASSISTANT: Sure, I am mirthful to help you with that. Can you please provide your preferable travel dates?

USER: My travel dates are Aug 25th and Aug 27th.

ASSISTANT: Do you have any specifications?

USER: The return time should be Morning.

ASSISTANT: Sorry to say that, there are no flights available on this route as per your travel dates.

USER: I can afford upto 5000. Ok, not an issue.

ASSISTANT: Thank you for reaching our agency, have a safe journey.

USER: Thank you.