You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I would like to change my existing reservation due to bad weather at my place. Can you help me with it?

ASSISTANT: On which name can I find your the reservation?

USER: My name is Jennifer Baker.

ASSISTANT: I am sorry to say, no reservation found in our database.

USER: Ok, thank you for your response.

ASSISTANT: Thanks for choosing us.