You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: My name is Steven Smith. I would like to travel from CLT to LAX.

ASSISTANT: Ok. Please share me your travelling dates to proceed further.

USER: My preferable dates are from 06/25 to 06/27.

ASSISTANT: Sorry, no flights are available on your given details.

USER: That's ok. Thank you.

ASSISTANT: Most welcome.