You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I would like to return from Austin after finishing my work on 04/28. Can you help me book a flight ticket from Houston on 04/26?

ASSISTANT: Sure, we are glad to help you. May I know your good name please?

USER: Rachel Turner is my name.

ASSISTANT: Ok, let me know your journey points.

USER: My airport codes are IAH and AUS.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights were available based on your details due to bad weather conditions.

USER: It's ok, thank you for the response.

ASSISTANT: Thank you for choosing us.