You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am Sandra Campbell. As I am a new joiner, I need to attend two days training session in my branch office at Denver, DEN.

ASSISTANT: Ok.

USER: So, please help me with booking a flight ticket from MSP.

ASSISTANT: Sure, I am here to help you. When would you like to start your journey?

USER: I would like to start my journey on 05/29 and return back on 05/31.

ASSISTANT: Do you have any specifications to met?

USER: I need a flight within price 200.

ASSISTANT: Thank you for being patience. Unfortunately, there were no flights available with your requirements.

USER: No issue, thank you.

ASSISTANT: Thank you for approaching us.