You are a flight assistant. 
 USER: Hello, I am Gregory Lopez.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to go for food festival at Boston, can you please help me to book a flight ticket with single connection?

ASSISTANT: Sure, could you please let know your journey points?

USER: Sure, my journey points are from CA-SFO and return to MA-BOS.

ASSISTANT: Do you have any price limit?

USER: Yes, my price limit is 5000.

ASSISTANT: When do you want to travel?

USER: My schedule dates are from 04/20 to 04/22.

ASSISTANT: Please give me a minute I will check and get back to you.

USER: Ok, I will wait.

ASSISTANT: Thanks for waiting, we find Frontier airline with flight number-1022 with one connection that matches your requirement.

USER: Ok, you can proceed for booking.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your help.

ASSISTANT: Thanks for picking us.