You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I need to change dates in my recent reservation, can you please help me?

ASSISTANT: Sure, may I know your name?

USER: The ticket is under the name Jessica Scott.

ASSISTANT: Please wait.

USER: Sure, I will wait.

ASSISTANT: We found your reservation, can you help me with your new airport codes?

USER: Sure, my airport codes are DEN and SEA.

ASSISTANT: May I know your travelling dates?

USER: My planned trip dates are Feb 22 and Feb 24.

ASSISTANT: Is there any connection limit?

USER: Yes, I am looking for a connecting limit.

ASSISTANT: Do you have any other requirements?

USER: I prefer economy class for my journey.

ASSISTANT: There are no flights found with your required dates to travel.

USER: That's fine, no issue. Anyway thank you for checking.

ASSISTANT: Thank you for choosing us.