You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am John Young. Can you please reserve me a flight ticket from Denver, CO - DEN to Phoenix, AZ - PHX?

ASSISTANT: Sure, may I know your travelling dates?

USER: My trip dates are 04/16 - 04/18.

ASSISTANT: Can I know your price limit?

USER: I can afford up to 1000.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: There is a flight found with number 1020 in Frontier airline and the ticket price is 100.

USER: Please reserve.

ASSISTANT: Your ticket is reserved.

USER: Thank you.

ASSISTANT: Thanks for availing us.