You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Mary Taylor.

ASSISTANT: What can I do for you today?

USER: I would like to conduct a pioneer festival at Washington. Can you help me in my booking?

ASSISTANT: Sure, please share your near by airport codes?

USER: My source airport code is Phoenix, AZ - PHX. My destination is Washington, DC - IAD.

ASSISTANT: Ok, can I have your travelling dates?

USER: I will start my journey on 08/23. I will return on 08/25.

ASSISTANT: Ok, do you need any other preferences?

USER: I need a halt in my journey.

ASSISTANT: There are no flights found due to abnormal weather conditions.

USER: Not an issue. Thank you for your kind information.

ASSISTANT: Thank you for reaching us.