You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: Brian Campbell here. My client meeting has been postponed, so I want to reschedule my itinerary dates.

ASSISTANT: Sure, I will help you with that. May I know your name please?

USER: I mentioned my name.

ASSISTANT: I found a reservation on your date base, can you please share your preferable journey dates?

USER: My itinerary dates are May 20 and May 22.

ASSISTANT: Can you please mention your source and destination airport codes?

USER: My genesis and terminus airport codes are LGA and HOU.

ASSISTANT: Do you have any specifications?

USER: I prefer normal-cost airlines.

ASSISTANT: Is there any connection limit?

USER: I need a connecting flight.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: No problem, thank you.