You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Anna Turner, want to travel from DFW to MSP. please help me in booking my ticket.

ASSISTANT: On which dates you are preferring to travel?

USER: I am willing to travel on 12/29 and want to return on 12/31.

ASSISTANT: Sure, please wait a minute. Let me check.

USER: Sure.

ASSISTANT: Sorry to inform you that there is noo flights available on these route.

USER: It's ok, thank you for your help.

ASSISTANT: Most welcome.