You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I render you at this moment?

USER: I am Sharon Hernandez. Can you help me to change my reservation?

ASSISTANT: Sure, please wait for few minutes.

USER: Sure, take your time.

ASSISTANT: There is no recent reservation found on your name in our records.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for reaching us.