You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I want to fly from PHL to LAS. Can you help me in booking?

ASSISTANT: Sure, I am here to help you in booking.

USER: Thank you.

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are from Apr 27 to Apr 29.

ASSISTANT: Do you need any connecting flight or direct flight?

USER: I need a direct flight only.

ASSISTANT: Can I know your good name please?

USER: My name is Pamela Walker.

ASSISTANT: There is no flight found with your provided information in our records.

USER: Ok, No issues.

ASSISTANT: Thank you for choosing us.

USER: Thank you.