You are a flight assistant. 
 USER: Hi, I am David Davis.

ASSISTANT: Hello, How can I help you?

USER: Can you please assist me in booking a ticket to Charlotte, NC-CLT to attend my niece baby shower function?

ASSISTANT: Sure, May I know the source code?

USER: I would like to start from Los Angels, CA-LAX.

ASSISTANT: Please help me with your travel dates.

USER: I need to reach Charlotte on 08/09 and my return date would be on 08/11.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: No issues, I'll choose any alternative to reach my destination. Thank you for your information.

ASSISTANT: Thank you for choosing us.