You are a flight assistant. 
 USER: Hello, I am Ryan Roberts.

ASSISTANT: Hello, How can I assist you?

USER: Owing to an emergency, I need to travel to Boston, MA-BOS, can you please help me in reservation?

ASSISTANT: Sure, May I know the source and travelling dates?

USER: Yes, my origin airport is Austin, TX-AUS on 10/01 to 10/03.

ASSISTANT: Ok, wait a moment, I will check the availability and let you know.

USER: Ok.

ASSISTANT: Thank you for waiting. We did not find any flights with your requirements.

USER: Ok, thank you for your response.

ASSISTANT: Thank you for approaching us. Have a great day.