You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: I want to change my reservation as my research work got extended. Can you help me changing the reservation made on name Linda Lee?

ASSISTANT: Sure, wait a moment I will check the reservation list.

USER: Sure, I will be looking for your response.

ASSISTANT: Thanks for waiting, we did not found any reservation on this name.

USER: That's alright.

ASSISTANT: Thanks for choosing us.

USER: Thanks for your response.