You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Daniel Mitchell, want to travel from CLT to LAX. Please help me in booking.

ASSISTANT: Sure, please provide your trip dates.

USER: Sure, my travelling dates are from 04/28 to 04/30. Please check the flight with 1 connection.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there is no flights available.

USER: It's ok, thank you.

ASSISTANT: Welcome.