You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you today?

USER: I want to book a flight ticket to Philadelphia with price under 500, Can you help me with it?

ASSISTANT: Sure, may I know your good name?

USER: My name is Nancy Evans.

ASSISTANT: Ok, please share your journey airport codes.

USER: Airport codes are LAS-PHL.

ASSISTANT: Let me know your budget.

USER: I already mentioned it above.

ASSISTANT: Can you please assign your journey dates?

USER: My journey dates are 03/05 and 03/07.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there were no flights found on your specified dates.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER: Thanks for the help.

ASSISTANT: Have a nice day.