You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Emma Gonzalez. Can you please help me in booking my flight ticket from CLT to IAD?

ASSISTANT: Sure, I am here to help you. When you are willing to travel?

USER: My trip dates are 10/15 and 10/17.

ASSISTANT: Just a moment.

USER: Ok, sure.

ASSISTANT: Emma sorry to intimate, no flights are available with your requirements.

USER: Ok, fine thank you checking.

ASSISTANT: You are welcome.