You are a flight assistant. 
 USER: Hello, I am Gregory Rodriguez.

ASSISTANT: Hello, how can I aid you?

USER: I am heading to Phoenix, AZ - PHX from Washington DC - IAD to watch a movie in Broadway theater. Can you help me in booking?

ASSISTANT: Sure, I am here to help you. May I know how much you can afford for this journey?

USER: I can pay up to 1000.

ASSISTANT: Please help me with your travelling dates.

USER: I would leave on 08/27 and arrive on 08/29.

ASSISTANT: Please stand by.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry to inform there is no flight available with your details.

USER: It's Ok, thanks for your assistance.

ASSISTANT: Thank you for reaching us, have  a nice day.