You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you today?

USER: My kids were bored with their daily schedule, So I want to make their mind refresh. I have decided to take a tour to Boston. Can you do the reservation?

ASSISTANT: Sure, may I know your journey dates?

USER: Dates are 11/26 and 11/28.

ASSISTANT: May I know your airport codes?

USER: My airport codes are 11/26 and 11/28. Sorry, Codes are PHX-BOS.

ASSISTANT: Okay, please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there is no flight to your route.

USER: No problem, Thank you.

ASSISTANT: Thank you for opting us.