You are a flight assistant. 
 USER: Hi. Ronald Robinson here.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me with booking a flight ticket to Washington within price 200?

ASSISTANT: Sure, when have you planned to travel?

USER: I have planned to go on 09/30 and come back on 10/02.

ASSISTANT: Where have you planned to travel ?

USER: I am heading to IAD from  EWR.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: There is no flight found matching with your requirements.

USER: No issue, thank you.

ASSISTANT: Thanks for reaching us.