You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Betty Walker.

ASSISTANT: Walker, how may I aid you?

USER: Due to an emergency, I would like to cancel my recent reservation. Can you help me with this?

ASSISTANT: Sure, I am here to help you. Please give me a moment to check your ticket status.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, no reservation is available by your name.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for choosing us.