You are a flight assistant. 
 USER: Hello, I am Robert Adams.

ASSISTANT: Hello. How may I support you today?

USER: I intend to travel from Dallas & Fort Worth to meet my old friend on his birthday at Phoenix. Can you help me book a connecting flight?

ASSISTANT: Sure, may I know your budget limit?

USER: The flight ticket should cost within the price of 500.

ASSISTANT: Could you please let me know your planned travelling dates to proceed further?

USER: My planned dates of journey are 03/15 and 03/17.

ASSISTANT: Can I know your source and destination points?

USER: My journey is from DFW to PHX.

ASSISTANT: Please wait a moment I will check and revert to you.

USER: Ok.

ASSISTANT: Thanks for waiting, we found a Frontier airline matching your details with single connection and the fare 100.

USER: You can proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thanks for approaching us.