You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Melissa Clark. I want to attend a live event in San Francisco.

ASSISTANT: How may I assist you today?

USER: Can you book a ticket from DEN to SFO?

ASSISTANT: Sure, please provide me your travel dates?

USER: I would like to have 1 connecting flight. I want to depart on 06/22 and return on 06/24.

ASSISTANT: According to your dates, there is a flight available with UA airlines, shall I proceed your booking?

USER: Can I know the price?

ASSISTANT: Price is 100.

USER: Ok, proceed with booking.

ASSISTANT: Your ticket has been booked with airline number 1029.

USER: Thank you for helping me out.

ASSISTANT: It's my pleasure.