You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Samantha Campbell here.

ASSISTANT: How can I assist you at this moment?

USER: Can you please book a flight ticket from LGA to MSP?

ASSISTANT: Sure, can you please provide your preferable journey dates?

USER: Sure, I need to travel on dates of 01/09 and 01/11.

ASSISTANT: Wait a moment please.

USER: Sure, take your time to check.

ASSISTANT: Samantha Campbell, there are no flights available on your provided dates due to heavy bookings.

USER: It's ok fine, no problem.

ASSISTANT: Thank you for contacting us.

USER: Anyway, thank you for your valuable time.