You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Actually, my friend booked a flight ticket for the first time, so while booking he made a mistake that the travel dates are given wrongly. Can you please check his ticket status and modify the details?

ASSISTANT: Sure, I will check his reservation and if it exists, I am ready to modify that.

USER: Ok, thank you so much.

ASSISTANT: Can you please help me with your friend's name to check his reservation status?

USER: Ok, he booked the ticket with his name that is Alexander Mitchell.

ASSISTANT: Thank you for providing required details, please wait a moment to check the existence of your friend's reservation.

USER: Ok, I will wait for your response. Go ahead and check the ticket status.

ASSISTANT: Thank you for waiting with patience.

USER: It's ok.

ASSISTANT: Sorry to inform you that no reservation has found under your friend's name. He may not be booked properly while booking.

USER: Oh! It's ok, I will ask him once again and if I need any help from our side, I will contact you. Anyways thank you for checking and spending your time.

ASSISTANT: It's my pleasure. Thank you for choosing us, have a good day.

USER: You are most welcome.