You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Myself Helen Harris, I would like to have a reservation from IAH to LAS.

ASSISTANT: Sure, please provide me your travelling dates?

USER: Dates will be 01/12 to 01/14.

ASSISTANT: Ok, may I know your name?

USER: I already said you it is Helen Harris.

ASSISTANT: Unfortunately, there is no flight found for your request.

USER: No issues.

ASSISTANT: Thank you for choosing us.

USER: Thanks for checking.