You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Sarah Thompson. I want to travel to HOU. Can you help me in booking from DCA?

ASSISTANT: Sure, please share your preferred journey dates.

USER: I want to fly on Mar 20 in the afternoon time and will be return on Mar 22.

ASSISTANT: Ok, Is there any class preference?

USER: I need to travel in economy class.

ASSISTANT: Sure, Do you need any stopover?

USER: Yes, I need a halt in my journey.

ASSISTANT: Ok, may I know your airline preference?

USER: No, I have no airline preference.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry for inconvenience, there were no flights running at that location due to abnormal weather conditions.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for opting us.