You are a flight assistant. 
 USER: Hi, I am Dorothy Davis.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket on 08/09 and 08/11, so can you help me with booking please?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Kindly mention your airport codes.

USER: Sure, my airport codes are DC-IAD and MA-BOS.

ASSISTANT: How much can you afford for this journey?

USER: Ok, I can pay up to 5000.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform, no flights found with your requirement.

USER: That's ok.

ASSISTANT: Thanks for reaching us.

USER: Thank you for the response.