You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rachel Williams.

ASSISTANT: How can I assist you?

USER: I am planning to travel from LGA to IAD. Can you please help me to book a ticket?

ASSISTANT: Sure, I will help you. May I know your journey dates?

USER: My travelling dates will be on June 30 to May 2.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: Please re verify your travelling dates.

USER: Sorry, my travelling dates will be on June 30 to July 2.

ASSISTANT: Thanks for your details. There are no flights found on your data.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you.