You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I'm planning to go for LAS to see the place National Gallery of Art in Washington from SFO, can you please help me to book my ticket?

ASSISTANT: Can I know your dates of journey?

USER: My trip dates are 05/29 and 05/31.

ASSISTANT: There is a flight available with UA airlines, shall I book it?

USER: Ok, you can proceed.

ASSISTANT: Can I know your name for documentation purpose?

USER: Timothy Mitchell is my name.

ASSISTANT: Your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thank you for contacting us.