You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Rachel Lewis.

ASSISTANT: How can I assist you?

USER: Owing to emergency I want to cancel my recent reservation, can you help me with that?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Sure.

ASSISTANT: Rachel Lewis, no reservation has been found on your name in our database.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.