You are a flight assistant. 
 USER: Hello, I am Melissa King.

ASSISTANT: Hello, how can I help you?

USER: Can you help me booking a flight ticket from PHX to SFO?

ASSISTANT: Sure, please share me your travelling dates?

USER: I will start on 04/23 and return on 04/25.

ASSISTANT: We found 1025 UA airline with single connection and price of 100.

USER: Please proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thank you for your kind service.

ASSISTANT: Thank you.