You are a flight assistant. 
 USER: Hi, I am Jack Gonzalez.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel to Boston BOS from EWR to enjoy river rafting with friends. Can you make a flight ticket reservation?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, I need to fly on Feb 13 and Feb 15.

ASSISTANT: Do you have any other specifications to be met?

USER: I need a stopover.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flights found on your given dates.

USER: Ok, no issues. Thank you for your assistance.

ASSISTANT: Thank you for choosing us.