You are a flight assistant. 
 USER: Hello. Emily Adams here.

ASSISTANT: Hello, how can I amend you?

USER: Due to some family issues I need to change an existing reservation. Can you please help me in that?

ASSISTANT: Sure, please wait a while.

USER: Sure.

ASSISTANT: Thank you for your time. We found a reservation with your name. May I know your updated dates of travel?

USER: Sure, my new journey dates are from 07/30 to 08/01.

ASSISTANT: Can you help me with your airport codes?

USER: Airport codes are from LAX to IAH.

ASSISTANT: Is there a connection you prefer within your journey?

USER: Yes, I prefer single connection in between journey.

ASSISTANT: Thank you for sharing your details. There are no connecting flights found according to your requirements.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for contacting us.