You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER:  I am having sudden meeting in my office, can you please help me changing my reservation?

ASSISTANT: Sure, before that can you help me by giving your name to find your reservation.

USER: Sure, my name is Mary Lewis.

ASSISTANT: Please wait a moment, let me check the status of reservation.

USER: Ok, take your time.

ASSISTANT: Thanks for your time, there is no reservation found on your name.

USER: That's fine, no problem. Thank you for checking.

ASSISTANT: Thanks for reaching us.