You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am Ruth Baker.

ASSISTANT: Thanks for sharing your name. How can I help you? Ruth Baker.

USER: Could you please help me out in changing my existing reservation? As my planned trip has been postponed to some other dates.

ASSISTANT: Sure, wait a minute. I will revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name to proceed further.

USER: Oh! may be I made a wrong booking, thank you anyways.

ASSISTANT: Ok, Thank you for choosing us.