You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Charles Parker.

ASSISTANT: Hello Parker.

USER: I am a film director, I want to visit Minneapolis & St. Paul to select the locations for my upcoming film. Will you please book me a ticket from ORD to MSP?

ASSISTANT: That's great to hear, I will definitely help you. When would you like to travel?

USER: I am planning to travel on 06/01 and 06/03.

ASSISTANT: Sorry to say this Parker, there are no flights matched with your requested dates. Do you want to change your planned dates?

USER: It's ok, I will go by some other way. No, thank you for your concern. Thank you for your service too.

ASSISTANT: Thank you for using our service, have a nice day.