You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning a business trip from OAK to MSP, can you book a ticket?

ASSISTANT: Sure, may I know your preferable dates please?

USER: My trip dates are 03/30 and 04/01.

ASSISTANT:  Ok, please give me a minute so that I can check the availability of flights for you.

USER: Ok. I want to book a ticket in the name of Carolyn Lewis.

ASSISTANT: I am sorry to say that there is no flight found. Can you please tell me your name?

USER: No problem.

ASSISTANT: Thank you.

USER: You are welcome.