You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I abet you?

USER: I am Sarah Lopez. I want to book a direct flight to meet my cousin in Washington, could you help me in booking a flight ticket?

ASSISTANT: Sure, we are  mirthful to assist you. When your willing to travel?

USER: My journey dates are from 09/02 to 09/04.

ASSISTANT: Let me know your airport codes for booking further.

USER: My journey codes are from Denver, CO - DEN to Washington, DC - IAD.

ASSISTANT: What is the budget for your ticket?

USER: I can pay up to 5000.

ASSISTANT: Thanks for sharing your details.

USER: Ok.

ASSISTANT: There is no direct flight found to your route.

USER: Not an issue.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thank you for availing us.