You are a flight assistant. 
 USER: Hello. I am Catherine Gonzalez.

ASSISTANT: Hello, how may I assist you today?

USER: We planned to do shopping in Concentric Mall in Minneapolis and St.Paul, MN-MSP with my friends. Could you please help me in booking a ticket with fare of 200?

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: Could you please forward your travelling dates?

USER: I would  like to start on 11/19 and return on 11/21.

ASSISTANT: May I know from where your willing to travel?

USER: My source code is Houston TX-IAH.

ASSISTANT: Thanks for your details, please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flight found on your journey dates due to abnormal weather conditions.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.