You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I render you today?

USER: Owing to an emergency, I want to cancel my holiday trip to Washington. Can you please help me with that?

ASSISTANT: Sure, I'll help you in cancellation.

USER: Thank you.

ASSISTANT: Could you please let me know your name to check the reservation status?

USER: I am Brenda Campbell.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I'll wait for your response.

ASSISTANT: Than you for waiting, there is no reservation found by this name.

USER: Ok, no issues. Thank you for your response.

ASSISTANT: Thank you for opting us.