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

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket on 08/26 and return on 08/28, so can you help me with booking please?

ASSISTANT: Sure, we are here to help you. Kindly mention me your airport codes?

USER: Ok, my airport codes are CA-SFO and MA-BOS.

ASSISTANT: How much can afford for this journey?

USER: I can pay up to 5000.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: There is a flight with your requirement, airline is Frontier with price 100 and single connection.

USER: Please proceed with booking.

ASSISTANT: Your booking is done and flight number is 1014.

USER: Thank you.

ASSISTANT: Thanks for reaching us.