You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: My name is Justin Adams, can you help me to book a flight ticket from PHX to IAD?

ASSISTANT: Yes, can you share me your travelling dates?

USER: Ok, please book a flight ticket for the dates May 20 and May 22.

ASSISTANT: Give me a moment.

USER: I need a connecting flight. Please check, I will wait.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: Thank you for assisting me.

ASSISTANT: Thank you for contacting us.

USER: That is not a problem. I will book next week.