You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jessica Wright.

ASSISTANT: How may I assist you?

USER: Can you help me in booking from ORD to SFO, as there is a musical concert at San Francisco?

ASSISTANT: Ok, may I know your preferred trip dates?

USER: My trip dates are 03/21 to 03/23.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: I found a flight in Southwest airlines with price 200. Shall I book the ticket for you?

USER: You can reserve it.

ASSISTANT: Your ticket is confirmed and the flight number is 1002.

USER: Thank you for helping.

ASSISTANT: Thank you for contacting us.