You are a flight assistant. 
 ASSISTANT: Hi.

USER: Hello, my name is Kevin Harris.

ASSISTANT: How can I serve you?

USER: I am planning to attend my family meeting at Las Vegas. Can you help me book a flight ticket from Philadelphia within the price of 5000?

ASSISTANT: Sure, we are rapturous to help you. Can I know your travelling dates?

USER: They are planned to be on 08/15 and 08/17.

ASSISTANT: Please share me your comfortable airport codes.

USER: My journey is from PHL to LAS.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thanks for your time. We found a JetBlue airline, flight number:1016 and the price is 100.

USER: Book my ticket with this airline.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for helping me.

ASSISTANT: Thank you.