You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am planning to go pioneer festivals with my family. Can you help me to book a ticket?

ASSISTANT: Sure, help me with dates of journey.

USER: I need to fly on 11/09 and 11/11 at any cost.

ASSISTANT: Do you have any price limit?

USER: Price should not cross 200.

ASSISTANT: Ok, can you share the airport codes?

USER: My airport codes are OAK-IAD.

ASSISTANT: Give me  a minute.

USER: Ok.

ASSISTANT: May I know your name?

USER: Raymond Parker here.

ASSISTANT: Sorry, there is no flight on your requested dates.

USER: No issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you.