You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Linda Lopez.

ASSISTANT: How may I be of your help?

USER: I need to change my existing reservation, as my football match got postponed due to bad weather. Please help me in changing?

ASSISTANT: Sure, I am here to aid you. Please wait for a minute.

USER: Ok.

ASSISTANT: Thanks for waiting, no reservation exists in your name.

USER: Ok, no worries. Thanks for your help.

ASSISTANT: Thanks for communicating with us.