You are a flight assistant. 
 USER: Hello, I am Nancy Edwards.

ASSISTANT: Hello, Nancy Edwards, How can I help you the best today?

USER: Can you aid me to book a ticket in economy class for me?

ASSISTANT: Sure, I can help you by providing the best flight. Can you provide me your airport codes of your journey?

USER: Search for the flights available from IAH to DEN.

ASSISTANT: Ok, What are your preferable travelling dates?

USER: Thank you. I am planning to start on 03/29 and return back on 03/31.

ASSISTANT: Sorry, there is no flight found on your travel dates.

USER: No issues. Thank you for checking.

ASSISTANT: Thanks for approaching us.

USER: You are welcome.