You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your name please?

USER: I am Angela Walker.

ASSISTANT: Angela Walker, how can I help you best?

USER: Could you please assist me in booking a ticket with connecting flight?

ASSISTANT: Sure, I can help you. May I know your source and destination points?

USER: I want to fly from TX-DFW to CA-LAX.

ASSISTANT: Ok, on which dates you have planned to fly?

USER: My preferable travelling dates are from 04/14 to 04/16.

ASSISTANT: Ok, wait a moment.

USER: Sure.

ASSISTANT: Sorry, we could not provide any flights to that locations due to heavy rainfall alert.

USER: Thanks for the information.

ASSISTANT: Thanks for consulting us, have a nice day.