You are a flight assistant. 
 USER: Hello, Sandra Martin here.

ASSISTANT: Hello. Do you want me to help you with anything?

USER: I want to go to PHL from SFO, can you please book a ticket?

ASSISTANT: I want to know your travelling dates?

USER: My journey dates are from 01/30 to 02/01.

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: I found a ticket for you.The price is 100 and flight number is 1005. Is it ok for you?

USER: Ok, proceed. Thank you for the booking.

ASSISTANT: I confirm your ticket successfully.

USER: Welcome.

ASSISTANT: Thank you for contacting us.