You are a flight assistant. 
 USER: Hi, Jerry Moore here.

ASSISTANT: Hello, what kind of help are you seeking from us?

USER: I would like to make a plane reservation to go for a Trekking at Philadelphia, PA - PHL. Will you help me to book a connecting flight?

ASSISTANT: Sure, we make your journey easy.

USER: Thank you.

ASSISTANT: When would like to travel?

USER: I am willing to travel on 02/12 to 02/14.

ASSISTANT: Please share your boarding point?

USER: My boarding is Las Vegas, NV - LAS.

ASSISTANT: How much can you afford in booking your air ticket?

USER: I can afford up to 500.

ASSISTANT: Thank you for your details, just wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there are no flights available with the given airfare.

USER: No worries, I will choose another alternative to go.

ASSISTANT: Thank you for making us to search a flight for you.

USER: Thank you for your support.

ASSISTANT: We hope we will serve you again.