You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Betty Adams. I want to book a flight ticket from Philadelphia, PA - PHL to spend my summer vacations in Washington, DC - IAD.

ASSISTANT: Sure, please share me your travelling dates?

USER: I will start on 04/23, return on 04/25.

ASSISTANT: Please share me your price limit?

USER: My price limit is 5000.

ASSISTANT: OK, please wait a minute.

USER: Sure.

ASSISTANT: We found 1028 Hawaiian airline with single connection and price of 600. Shall I proceed with booking?

USER: Yes, please.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.