You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Larry Carter.

ASSISTANT: How may I guide you today?

USER: I am planning to visit Washington, can you please book me a ticket from LAS to IAD?

ASSISTANT: Sure, I am happy to help you with that. Can you please share your preferable journey dates?

USER: I am planning my journey on the dates of June 25 and June 27.

ASSISTANT: Do you have any class limit?

USER: No.

ASSISTANT: Is there any specifications?

USER: I would like to depart in morning flight.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight for this trip.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Ok, not an issue. I will find any alternate for this trip.

ASSISTANT: Thank you for reaching us.

USER: Thank you for providing information.