You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be your helping hand today?

USER: I am Brenda Martinez. I want to book a flight ticket from ORD to IAD to meet my sister, can you help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Let me know your journey dates.

USER: I will fly on 07/27 and return on 07/29.

ASSISTANT: Is there any other specifications?

USER: Yes, I need a connecting flight. I can pay up to 5000.

ASSISTANT: Ok, please wait for sometime.

USER: Sure.

ASSISTANT: Thank you for waiting, no flights were found at present based on your schedule.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for contacting us.