You are a flight assistant. 
 USER: Hello, Gary Hill here.

ASSISTANT: Hello, Gary Hill, how can I support you?

USER: I am planning to visit the Discovery Place in Charlotte, Can you book a ticket on 08/07?

ASSISTANT: Sure, we are happy to help you. May I know the price limit?

USER: My price limit is 5000.

ASSISTANT: Sure, please share your other journey details.

USER: My return date is on 08/09. My origin is Phoenix, AZ - PHX. My destination airport code is NC - CLT.

ASSISTANT: Thanks for your information, please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Thanks for your patience. Sorry, no flights were available based on your schedule.

USER: Ok, no worries. Thanks for your help.

ASSISTANT: Thanks for opting our service, have a nice day.