You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Pamela Walker.

ASSISTANT: How can I oblige you?

USER: I am a sports player, I would like to conduct a sports festival at Washington. Can you help me in my booking?

ASSISTANT: Sure.

USER: Ok.

ASSISTANT: Could your please share your travelling dates?

USER: I will start my journey on 12/19. I will return on 12/21.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight.

ASSISTANT: To proceed booking I need your airport codes.

USER: My source airport code Detroit, MI - DTW. My destination is Washington, DC - IAD.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no direct flight available with your given requirements.

USER: Not an issue. Thank you for your kind information.

ASSISTANT: Thank you for picking us.