You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Sharon Wilson.

ASSISTANT: Sharon Wilson, how can I assist you?

USER: I want to change my reservation, can you help me with that?

ASSISTANT: Sure, please give me a moment to check your ticket status.

USER: Sure.

ASSISTANT: I found your reservation, please provide your rescheduled itinerary dates.

USER: My itinerary dates are Apr 17 and 19.

ASSISTANT: May I know your genesis and terminus airport codes?

USER: My airport codes are SEA and DCA.

ASSISTANT: Do you have any specifications?

USER: I want to depart in the morning time.

ASSISTANT: Do you have any other preferences?

USER: I need a break in my journey.

ASSISTANT: Please give me a moment.

USER: Sure, I will wait. but I want to travel in economy class.

ASSISTANT: Ok. Sorry, no flights are available on your route.

USER: Ok, no issues. Thank you for checking the status.

ASSISTANT: Thank you for choosing us.